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Overnight Croissant Breakfast Casserole

Overnight Croissant Breakfast Casserole


Overnight Croissant Breakfast Casserole – Kickstart your day with the comfort food; an Overnight Croissant Breakfast Casserole. This enjoyable dish brings together croissants, savory sausage and gooey cheddar cheese all baked to exemplar a delectable breakfast adventure. Whether you’re looking forward to a weekend morning or planning a brunch gathering this casserole is bound to become a beloved addition, to your recipe collection.

Overnight Croissant Breakfast Casserole

The first time I put together this heavenly casserole was on a cold Sunday morning when I desired to amaze my family with something exceptional. The irresistible scent of buttery croissants and sizzling sausage wafted throughout our home. Creating an ambiance. My reserved husband couldn’t help to shower it with praise while my child… Well, let’s just say they now request it every weekend. It has evolved from being another recipe into a memory maker.

What makes this Overnight Croissant Breakfast Casserole truly exceptional?

What sets this Overnight Croissant Breakfast Casserole apart? Is its effortless grace and adaptability. You can prepare it in advance for a hassle-free gourmet breakfast that feels both indulgent and cozy. Its adaptability allows you to add your special glimmer by incorporating veggies or testing with various sorts of cheeses. The mixture of flaky, buttery croissants, delicious sausage and creamy cheese begets a medley of tastes. That pleads with both grown-ups and youngsters. It’s insured to be a crowd-pleaser whenever it’s served.

Overnight Croissant Breakfast Casserole

What You Need To Make This Overnight Croissant Breakfast Casserole Recipe?

Olive oil: We start our journey by drizzling a mist of olive oil, over the dish infusing it with a delightful Mediterranean touch.

Small Onion: The chopped small onion serves as the foundation of flavor gently softening and adding a hint of sweetness to our masterpiece dish.

Breakfast Sausage: Taking center stage in our ensemble the mild breakfast sausage brings depth that’s both pleasant and inviting. Its crumbles create a rhythm of a drumbeat shaping the style of the dish.

Butter Croissants: Deliciously flaky and buttery croissants add a touch of luxury to our casserole as they are carefully torn by hand. They eagerly soak up the egg mixture before rising into clouds when baked creating a contrast, to the rich flavors surrounding them.

Cheddar Cheese: With its sharpness, texture and tangy notes cheddar cheese skillfully weaves its way through the casserole. It melts beautifully enveloping every element in a comforting embrace.

Large Eggs: Eggs signify the promise of a day as they come together with all the components to construct a delightful dish that works its charm in the oven.

Heavy Whipping Cream: A plentiful amount of whipped cream adds a texture, to the casserole recasting it into a custard-like dish that is both forgiving and surprisingly light—an immaculate treat for commencing the day.

Milk: The addition of milk ensures that the casserole stays moist and tender like a soothing background melody in the morning.

Mustard powder, salt, black pepper, paprika and garlic powder: The spices—mustard powder, salt, black pepper, paprika and garlic powder—are not just seasonings; they bring with them memories of tradition and stories from kitchens past. They enhance the flavors and warmth making every bite an experience. The journey from ingredients to a delightful dish is like kitchen alchemy—a mystical testament to the passion and purpose we put into our cooking.

Butter & Flour: When butter and flour come together they create a velvety gravy that lovingly coats each slice of the casserole adding a touch, to the recipe.

Overnight Croissant Breakfast Casserole

Steps To Make Overnight Croissant Breakfast Casserole:

Step 1: Start by heating the olive oil in a skillet until it becomes warm. Cook the onions until they turn translucent and shiny. Break down the sausage into crumbles. Cook it thoroughly. Set aside the fat, for making the gravy.

Step 2: In a bowl mix together the sausage, onions, croissant pieces and cheese. Transfer this mixture to a baking dish that has been greased.

Step 3: In a bowl whisk together eggs, cream, ½ cup of milk and your preferred spices. Pour this mixture over the mixture in the baking dish. Cover it up. Let it chill in the refrigerator overnight.

Step 4: In the morning preheat your oven to 350°F. Bake the dish until it turns a beautiful golden brown color. This should take 35 to 45 minutes.

Step 5: To prepare the gravy melt butter along with an amount of sausage fat, in a saucepan. Stir in flour gradually. Then slowly whisk in the remaining milk. Let it simmer until thickened to your liking while seasoning with salt and pepper as desired.

Overnight Croissant Breakfast Casserole


To accomplish a texture and guarantee a balanced issuance of flavors, in your Overnight Croissant Breakfast Casserole it’s important to focus on the craftwork of layering croissants. Start by tearing the croissants into portions making sure they’re not too small or too large. This size lets each piece sponge the egg mixture beautifully. Resulting in a contrast between the crispy golden tops and the soft custard-like interior once baked. Arrange these torn pieces evenly at the bottom of your dish before adding the sausage and cheese mixture creating a mosaic of pastry that will rise and blend with the fillings. This strategy not only improves the dish’s captivation. But also heightens the interaction between consistencies. Creating a rhythmic balance of creamy and crispy in every mouthful.

Frequently Asked Questions:

Can I add vegetables?

Certainly! You can enhance the dish by adding bell peppers, mushrooms or spinach for a dose of veggies.

Can this casserole be frozen?

Although it is most delicious when freshly made you can indeed freeze it. Just make sure to thaw it in the refrigerator, before reheating.

Can I use low-fat milk?

Definitely! While whole milk adds a rich texture using low-fat milk works perfectly fine as a lighter alternative.

Overnight Croissant Breakfast Casserole
Overnight Croissant Breakfast Casserole

Overnight Croissant Breakfast Casserole

This Croissant Breakfast Casserole is, like a hug in a dish combining the buttery goodness of croissants with the comforting flavors of sausage and the delightful meltiness of cheddar cheese. It’s a recipe that carries thrill to your mornings heightening ingredients into a symphony of flavors and consistencies. By preparing it the night you unlock the secret to a scrumptious start to your day waking up to the golden hue of a homemade breakfast masterpiece. This dish is immaculate, for bringing loved ones to the table recasting a morning into a unique experience loaded with giggle, coziness and the simple satisfaction of sharing a feast made with love.
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Course: Breakfast
Cuisine: American
Keyword: Overnight Croissant Breakfast Casserole
Prep Time: 30 minutes
Cook Time: 1 hour
Servings: 12


  • 1 tbsp olive oil
  • 1 small onion peeled and chopped
  • 1 lb breakfast sausage mild flavor
  • 4 large butter croissants or 8 small croissants
  • 1 c shredded cheddar cheese
  • 6 large eggs
  • 1/2 c heavy whipping cream
  • 3 c milk whole milk recommended, divided
  • 1/2 tsp dry mustard powder
  • 1/2 tsp salt plus additional for the gravy to taste
  • 1/2 tsp black pepper plus additional for the gravy to taste
  • 1/4 tsp paprika
  • 1/4 tsp garlic powder
  • 2 tbsp butter
  • 3 tbsp all-purpose flour


  • Start by heating up some olive oil in a skillet. Once it’s hot add the chopped onions. Sauté them until they become soft and translucent. Next, add the sausage to the skillet. Cook it until it turns brown. Remember to drain the fat from the sausage. Make sure to save some for later use, in making gravy. Allow the mixture to cool down slightly.
  • Now take some croissants. Tear them into pieces. In a bowl combine these torn pieces with the cooked sausage mixture and some cheese. Mix everything together well before spreading it in a greased 9×13-inch baking dish.
  • In another bowl whisk together eggs, cream, half a cup of milk and your choice of spices. Once everything is well combined pour this mixture over the croissant sausage mixture in the baking dish. Cover it up with a lid or some plastic wrap and refrigerate overnight.
  • The day preheat your oven to 350°F (175°C). Place your casserole dish in the oven. Bake for about 35 to 45 minutes until it turns brown on top.
  • While your casserole is baking you can prepare some gravy as well. In a pan or saucepan, melt the butter along with the reserved fat from earlier. Stir in flour. Cook for a minute while continuously stirring. Gradually add 2 ½ cups of milk into this mixture while stirring constantly until it thickens up nicely. Season with salt and pepper according to your taste preferences.
  • Once your casserole is ready out of the oven serve it hot alongside your gravy, on the side.
  • Enjoy this breakfast casserole!


To construct this Overnight Croissant Breakfast Casserole gluten-free while still holding its satisfying flavors you can make a few substitutions. Rather than using butter croissants use your selected gluten-free bread or pastry that has a similarly rich and buttery taste to preserve the dish’s indulgent texture. As, for the gravy select a gluten-free all-purpose flour blend that thickens smoothly and evenly without forming lumps so your sauce turns out just, as creamy and delightful.
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