Heirloom tomatoes, puff pastry, egg, mozzarella, Boursin Garlic & Fine Herbs cheese, salt, pepper, basil, and flaky sea salt.

I have a soft spot for recipes that look like they came from a cute little bakery case but secretly start with store-bought puff pastry. That’s exactly why I love these Boursin and Tomato Puff Pastry Squares. They’re flaky, buttery, cheesy, colorful, and just fancy enough to make people say, “Wait, you made these?” which is always a nice little ego boost in the kitchen.

These savory puff pastry tomato squares are topped with shredded mozzarella, creamy Boursin Garlic & Fine Herbs cheese, and thin slices of heirloom tomatoes. Then they bake until golden and bubbly, and honestly, they come out looking like you tried much harder than you did. I support that kind of recipe. Fully.

This Boursin and Tomato Puff Pastry Squares recipe is perfect for late summer, when tomatoes are actually tasting like tomatoes and not like sad red water. Serve them as an appetizer, brunch bite, light lunch, or easy dinner with salad. They’re simple, but they have that little “ooh, pretty” moment. And sometimes, that’s exactly what food needs.

The first time I made Boursin and Tomato Puff Pastry Squares, it was one of those late-summer kitchen days where I had a few tomatoes sitting on the counter looking almost too pretty to use. You know the kind? The red, orange, yellow, maybe slightly striped heirlooms that make you feel like you should be shopping at a farmers market in a linen shirt, even if you’re actually standing in your kitchen wearing old slippers.

I had puff pastry in the freezer, a round of Boursin in the fridge, and no big plan. That’s usually how my favorite recipes start, honestly. Not with a grand idea. More like, “Hmm, what can I throw together before these tomatoes get too soft?” Sound familiar? Tomatoes, like avocados, have a very dramatic timing window. One day they’re perfect, the next day they’re saying goodbye.

So I sliced the tomatoes, salted them, patted them dry, and layered them over puff pastry with mozzarella and crumbles of Boursin. I wasn’t expecting them to look as pretty as they did. But when those little tomato puff pastry tarts came out of the oven, golden at the edges with bubbly cheese and colorful tomatoes on top, I had a tiny proud moment. Like, “Oh. Okay. We’re doing elegant today.”

What I love about these Boursin and Tomato Puff Pastry Squares is that they feel special without acting precious. They’re not complicated. They don’t ask you to make pastry from scratch or whip up a sauce or do anything that requires a second cup of coffee. The puff pastry handles the flaky drama, the Boursin brings the garlic-herb flavor, and the tomatoes do their bright, juicy summer thing.

They remind me of casual patio lunches, bridal shower snack tables, lazy Sunday brunches, and those evenings when dinner is just salad plus something warm and cheesy because that absolutely counts. They’re the kind of food that makes people hover near the tray, pretending they’re “just looking.” Sure. We all know what’s happening.

Why you’ll Love these Boursin and Tomato Puff Pastry Squares?

• They look impressive without being complicated. These Boursin and Tomato Puff Pastry Squares have that crisp, golden, bakery-style look, but they start with thawed puff pastry. I love homemade pastry in theory, but in real life? Store-bought puff pastry is a gift. It gives you flaky layers, buttery flavor, and a beautiful base without hours of work. Once you cut it into squares, add cheese and tomatoes, and bake it, the oven does the show-off part for you.
• They taste rich, fresh, and summery all at once. The puff pastry is buttery and crisp, the mozzarella melts into a soft cheesy layer, and the Boursin adds that creamy garlic-and-herb flavor that makes the whole thing taste more put together. Then the tomatoes bring sweetness, juiciness, and color. I wouldn’t say these Boursin and Tomato Puff Pastry Squares are heavy, exactly, but they’re definitely satisfying. Rich enough to feel like a treat, fresh enough to keep you reaching for another bite.
• They’re perfect for heirloom tomato season. This recipe really shines when tomatoes are ripe and flavorful. Smaller heirloom tomatoes, around 2 to 3 inches wide, work especially well because they fit neatly on the pastry squares and tend to have more concentrated flavor. Use different colors if you can. Red, yellow, orange, green, striped — it makes the pastries look so pretty without extra work. It’s basically edible stained glass, but with cheese.
• They work for so many occasions. These Boursin and Tomato Puff Pastry Squares can be appetizers, brunch bites, lunch, or a light dinner. Serve them warm when the cheese is melty, or at room temperature when you’re making food for a gathering and don’t want to panic about timing. They’re lovely for summer parties, potlucks, picnics, showers, or a “let’s eat something cute with salad” dinner. Very specific mood, but you get it.
• They use simple ingredients that feel special together. Puff pastry, tomatoes, mozzarella, Boursin, basil, salt, pepper — that’s the basic list. Nothing too wild. But together, they taste buttery, creamy, juicy, herby, and just a little elegant. I think that’s why this tomato puff pastry squares recipe works so well. It doesn’t try too hard. It just lets good ingredients do their thing.

Ingredient Notes

The ingredients for Boursin and Tomato Puff Pastry Squares are simple, but each one matters. Puff pastry gives you the flaky base, mozzarella adds a melty layer, Boursin brings creamy garlic-herb flavor, heirloom tomatoes add color and sweetness, and the basil plus flaky salt make everything taste bright at the end. It’s a short list, but it pulls together beautifully.

• Heirloom Tomatoes: Heirloom tomatoes are the star of these Boursin and Tomato Puff Pastry Squares. They bring the color, the sweetness, and that juicy late-summer flavor that makes the whole recipe feel special. Slice them about 1/4 inch thick so they soften nicely without weighing down the pastry. Smaller tomatoes are best because they fit better on individual squares. And please don’t skip the salting and patting dry step. I know it feels a little fussy, but tomatoes are juicy little chaos agents. Too much moisture can make puff pastry soggy, and soggy pastry is not the dream.
• Puff Pastry: Puff pastry is the flaky, buttery base for these savory tomato puff pastry squares. Frozen puff pastry works beautifully here, which is wonderful because nobody needs to prove anything by making pastry from scratch on a random afternoon. Keep it thawed but still cool while you work. If it gets too warm, it can turn soft and sticky, and the layers won’t puff as nicely. Puff pastry is a bit dramatic, but when treated well, it rewards you.
• Egg Wash: The egg wash is made with 1 large egg whisked with 1 tablespoon water. Brushing it around the edges gives the pastry a golden, shiny finish. Is it absolutely necessary? Maybe not, but it really does make the squares look more polished. It’s like giving the pastry a little lip gloss before it goes into the oven. Tiny step, big visual payoff.
• Shredded Mozzarella: Mozzarella adds a mild, melty cheese layer in the center of each tart. It also helps create a little barrier between the tomatoes and the puff pastry, which helps keep things from getting too wet. Use about 1/4 cup per square. Mozzarella doesn’t fight with the Boursin or tomatoes. It just melts quietly and makes everything more comforting.
• Boursin Garlic & Fine Herbs Cheese: Boursin is what gives these Boursin and Tomato Puff Pastry Squares their creamy, garlicky, herby personality. A few crumbles on each square are enough because Boursin has a lot of flavor. It softens as it bakes and creates little creamy pockets between the mozzarella and tomatoes. It’s one of those ingredients that makes people think you added a whole secret seasoning blend. Nope. Just Boursin doing Boursin things.
• Kosher Salt and Black Pepper: Kosher salt seasons the tomatoes and helps draw out extra moisture before baking. That helps protect the puff pastry from becoming soggy. Black pepper adds a gentle savory bite. Since Boursin already has a good amount of garlic-herb flavor, you don’t need to go wild with seasonings here. The simple salt and pepper approach works.
• Flaky Sea Salt: Flaky sea salt is added right before serving. It gives the finished Boursin tomato tarts a tiny crunch and a brighter, more balanced flavor. It also makes them look a little restaurant-y, which I always enjoy. Use a light but confident sprinkle. We want flavor, not a salt blizzard.
• Fresh Basil: Fresh basil brings color, fragrance, and that classic tomato-basil flavor. Add it after baking so it stays bright and fresh. If you bake basil too long, it can turn dark and lose that lovely fresh taste. Thinly sliced basil at the end makes the squares feel summery and finished.

How to Make Boursin and Tomato Puff Pastry Squares?

Making Boursin and Tomato Puff Pastry Squares is much easier than they look. You’ll salt and dry the tomatoes, roll and cut the puff pastry, brush the edges with egg wash, add mozzarella and Boursin, top with tomato slices, then bake until golden. The two big things to remember are simple: keep the pastry cool and keep the tomatoes from being too wet.

1. Preheat the oven and prepare the pan. Preheat your oven to 400°F and place a rack in the upper third of the oven. That upper rack helps the puff pastry get nicely golden. Line a baking sheet with parchment paper and set it aside. Parchment is one of those things that feels optional until you don’t use it and regret your life choices while scraping cheese off a pan.
2. Salt and dry the tomatoes. Arrange the tomato slices in a single layer on a paper towel-lined plate or small baking sheet. Season both sides with kosher salt, using about 1/2 teaspoon total, then cover them with another paper towel and gently press so the towel touches the tomatoes. Let them sit while you prepare the pastry. This pulls out extra moisture, which helps keep the pastry crisp. It’s not glamorous, but it matters.
3. Roll out the puff pastry. Unfold the thawed puff pastry on a lightly floured surface. Use a rolling pin to gently roll it into about an 8 x 12-inch rectangle. Don’t press too hard. You’re not trying to flatten its soul. You just want it large enough to cut into 8 smaller tart crusts. Gentle rolling keeps those flaky layers happier.
4. Cut the pastry into squares. Cut the pastry into 8 smaller rectangles, about 3 x 4 inches each. Transfer them to the parchment-lined baking sheet with a little space between each one. They don’t have to be perfectly equal. If one square is slightly larger, congratulations, someone gets the “chef’s portion.” Rustic is fine here.
5. Brush the edges with egg wash. Brush the edges of each puff pastry square with egg wash. Try not to flood the center. The egg wash helps the edges turn shiny and golden, giving these Boursin and Tomato Puff Pastry Squares that bakery-style finish. It’s a small step, but it makes them look so much prettier.
6. Add the mozzarella. Sprinkle about 1/4 cup shredded mozzarella in the center of each pastry square, keeping the egg-washed edges visible. The mozzarella melts into a mild cheesy layer and helps cushion the pastry from the tomatoes. Useful and delicious, which is exactly what we want from cheese.
7. Add the Boursin cheese. Crumble a few pieces of Boursin Garlic & Fine Herbs cheese over the mozzarella. You don’t need to spread it perfectly. It will soften as it bakes and melt into little creamy pockets. Try not to snack on half the Boursin while assembling. I say that with experience and no shame.
8. Top with tomato slices. Nestle a few tomato slices over the cheese. Keep them mostly in the center so the puff pastry edges can rise around them. If you’re using colorful heirloom tomatoes, mix the colors on each square. This is the part where the recipe starts looking very pretty, very quickly. Low-effort beauty. Love that.
9. Bake until golden and bubbly. Bake the Boursin and Tomato Puff Pastry Squares for 18 to 22 minutes, rotating the baking sheet halfway through so they brown evenly. They’re ready when the pastry is puffed, flaky, and golden, and the cheese is melted and bubbly. If a little tomato juice appears, don’t panic. As long as the edges are golden and crisp, you’re in good shape.
10. Finish and serve. Remove the pastries from the oven and let them cool slightly. Just before serving, sprinkle each square with flaky sea salt and thinly sliced fresh basil. Serve warm or at room temperature. Warm gives you the melty cheese moment, while room temperature makes them perfect for parties, brunches, and casual snacking.

Storage Options

These Boursin and Tomato Puff Pastry Squares are best the day they’re baked, when the pastry is crisp and flaky. Puff pastry naturally softens over time, especially when topped with juicy tomatoes and cheese. But leftovers can still be stored and reheated. They may lose a little crunch, but the flavor will still be lovely.

• Room Temperature: If you’re serving these for brunch, lunch, or a party, they can sit at room temperature for about 2 hours. They taste good warm or at room temperature, which makes them pretty relaxed for entertaining. After that, refrigerate them because of the cheese and tomatoes. If possible, avoid covering them too tightly while they’re still warm because trapped steam softens the pastry.
• Refrigerator: Store leftover tomato puff pastry squares in an airtight container in the refrigerator for up to 2 to 3 days. If you stack them, place parchment paper between layers. The pastry will soften as it sits, but reheating can help bring back some crisp edges. Let them cool completely before storing, because warm pastry in a sealed container turns steamy fast. And steam is puff pastry’s frenemy.
• Freezer: Freezing fully baked Boursin and Tomato Puff Pastry Squares isn’t ideal because the tomatoes can release moisture after thawing and the pastry may soften. But if you really need to freeze them, cool them completely, freeze them in a single layer until firm, then transfer them to a freezer-safe container. Reheat from frozen in the oven. The texture won’t be perfect, but they can still be enjoyable in a pinch.
• Reheating: Reheat leftovers in a 350°F to 375°F oven until warmed through and crisped around the edges. Avoid the microwave if you can, because it makes puff pastry soft very quickly. An air fryer can also work well for one or two pieces, but check often because the pastry can brown fast. Puff pastry leftovers need gentle encouragement, not chaos.
• Make-Ahead Tip: You can slice and salt the tomatoes ahead of time, then pat them dry before assembling. You can also cut the puff pastry into rectangles and keep them chilled until you’re ready to build the tarts. For the best texture, assemble and bake shortly before serving. Puff pastry likes to be fresh, and honestly, I can’t blame it.

Variations & Substitutions

This Boursin and Tomato Puff Pastry Squares recipe is easy to customize, which is one reason I like it so much. You can use different tomatoes, switch the cheese, add pesto, bring in caramelized onions, make it spicy, or turn the squares into mini appetizers. Puff pastry is basically a flaky little stage, and the toppings get to perform.

• Use different tomatoes. Heirloom tomatoes are beautiful, but Roma tomatoes, vine tomatoes, cocktail tomatoes, cherry tomatoes, or grape tomatoes can work too. If using cherry or grape tomatoes, slice them in halves or thin rounds. Whatever tomatoes you choose, remove extra moisture before baking. This is the one tomato rule I wouldn’t skip. Juicy tomatoes are wonderful, but soggy pastry is a tiny heartbreak.
• Try another Boursin flavor. Garlic & Fine Herbs is classic, but other Boursin flavors can make these Boursin and Tomato Puff Pastry Squares taste slightly different in a fun way. Shallot & Chive, Cracked Black Pepper, or Basil & Chive would all be delicious. It’s an easy swap that keeps the creamy texture while changing the flavor. Very low effort. Very high reward.
• Swap the mozzarella. Mozzarella is mild and melty, but you can use fontina, Gruyère, goat cheese, provolone, Parmesan, or mild white cheddar. Gruyère makes the tarts richer, goat cheese adds tang, Parmesan brings salty depth, and fontina melts beautifully. Use what you like or what’s in the fridge. Cheese substitutions are one of life’s small freedoms.
• Add pesto. Spread a thin layer of pesto under the cheese for a caprese-style flavor. Basil, garlic, olive oil, tomatoes, cheese — it all makes sense. Just don’t use too much pesto or the pastry can get oily. A little goes a long way. Pesto is flavorful, but it can be a bit bossy if given too much space.
• Add caramelized onions. A small spoonful of caramelized onions under the tomatoes adds sweetness and a deeper savory flavor. This makes the savory puff pastry tomato tarts feel warmer and more cozy. Just make sure the onions aren’t too wet before adding them. Again, puff pastry and moisture are in a complicated relationship.
• Make them spicy. Add crushed red pepper flakes, chili oil, or a drizzle of hot honey after baking. A little heat works beautifully with sweet tomatoes and creamy Boursin. Hot honey especially gives you that sweet-salty-spicy thing, which I used to think was slightly overdone until I tried it on cheesy pastry. Okay, yes, I get it now.
• Make them mini. Cut the puff pastry into smaller squares for bite-size appetizers. This is perfect for parties, showers, holiday trays, or brunch boards. Smaller tarts may bake faster, so keep an eye on them. Also, mini puff pastry bites disappear suspiciously fast, so making extra is not a bad idea. Actually, it’s probably wise.

What to Serve With Boursin and Tomato Puff Pastry Squares?

Boursin and Tomato Puff Pastry Squares are buttery, cheesy, and fresh, so they pair nicely with crisp salads, light soups, brunch dishes, grilled proteins, and bright drinks. Since the pastry is rich, I usually like serving something fresh beside it. Balance, but make it delicious.

• Simple Green Salad: A crisp green salad is one of the easiest pairings for these Boursin and Tomato Puff Pastry Squares. Mixed greens, romaine, cucumber, and a light vinaigrette keep the meal fresh and balanced. The salad cuts through the buttery pastry and creamy cheese. Add the tarts on the side, and suddenly you’ve got a lunch that feels a little fancy without being fussy.
• Arugula Salad: Peppery arugula is especially good with tomatoes and Boursin. Toss it with lemon juice, olive oil, salt, and pepper for a quick side. The bright, slightly spicy greens balance the richness of the cheese and pastry. It gives the whole plate a café-lunch feeling, which I find very charming, especially when I’m eating at home and pretending I didn’t just wipe the counter with a paper towel five seconds ago.
• Soup: Serve Boursin and Tomato Puff Pastry Squares with tomato soup, roasted red pepper soup, vegetable soup, or a light chicken soup. The pastry works almost like a fancy grilled cheese side, especially with tomato soup. Tomato with tomato may sound like a lot, but when tomatoes are in season, I say lean into it. Good tomatoes don’t last forever.
• Brunch Spread: Add these tomato puff pastry squares to a brunch spread with eggs, fruit, roasted potatoes, smoked salmon, fresh greens, and coffee. They bring color, flaky texture, and cheesy richness to the table. Since they taste good warm or at room temperature, they’re great for relaxed brunches where everyone keeps chatting and reaching for one more bite.
• Charcuterie Board: These squares are lovely beside cured meats, cheeses, olives, crackers, pickles, grapes, and other snacky board favorites. They add something warm and flaky to the mix, which makes the board feel more complete. This is a great option for casual entertaining, appetizer night, or a “dinner is a board” kind of evening. Those evenings are valid.
• Grilled Chicken or Fish: For a fuller meal, serve the pastries with grilled chicken, roasted chicken, salmon, shrimp, or white fish. The tomatoes and basil keep things fresh, while the pastry adds richness. It’s a nice summer dinner combination when you want something pretty but not too heavy. Also, it makes leftovers feel less like leftovers if you add a warm pastry. Just saying.
• White Wine or Sparkling Drinks: These Boursin and Tomato Puff Pastry Squares pair nicely with chilled white wine, rosé, sparkling water, lemonade, or iced tea. Bright, cold drinks balance the buttery pastry and creamy cheese. For a simple summer lunch, sparkling water with lemon or basil feels refreshing and easy. Nothing too complicated, which is sometimes exactly right.

FAQ

How do I keep puff pastry from getting soggy?

The biggest trick is drying the tomatoes. Salt them, let them sit, and pat them dry before assembling. Also, don’t overload the pastry with too much tomato or cheese. The mozzarella helps create a small barrier between the juicy tomatoes and the pastry. It’s not foolproof magic, but it helps a lot.

Can I use regular tomatoes instead of heirloom tomatoes?

Yes, regular tomatoes work. Roma tomatoes, vine tomatoes, cocktail tomatoes, cherry tomatoes, or grape tomatoes can all be used for these Boursin tomato puff pastry squares. Heirloom tomatoes add beautiful color and flavor, but ripe regular tomatoes are still delicious. Just slice them thinly and remove extra moisture.

Can I use homemade puff pastry?

Yes, homemade puff pastry works if you want to use it. Store-bought puff pastry is easier and still gives great results, but homemade pastry will make the tarts feel extra special. Either way, keep the dough cool while assembling so it puffs properly in the oven.

What is Boursin cheese?

Boursin is a soft, creamy cheese with a rich garlic-and-herb flavor. It’s spreadable, flavorful, and very good in savory pastries. In these Boursin and Tomato Puff Pastry Squares, it adds creamy texture and bold flavor without needing a long list of extra seasonings.

These Boursin and Tomato Puff Pastry Squares are flaky, buttery, colorful, creamy, and surprisingly easy. They’re one of those recipes that makes you feel like you did something special, even though the process is simple and forgiving. That’s my favorite kind of kitchen win.

Serve them for brunch, lunch, appetizers, light dinners, or a late-summer snack with salad on the side. Would you make your Boursin and Tomato Puff Pastry Squares with colorful heirlooms, extra basil, hot honey, or classic garlic-herb Boursin? Can’t wait to hear what you think!