Cheesy French Onion Baked Casserole
Dive into the heartwarming embrace of our Cheesy French Onion Baked Casserole. Where the sweet, caramelized depths of Vidalia onions. Meld with the rich. Nutty tones of melted Gruyère cheese. Each spoonful. Is a journey. Through layers of toasted baguette. That soak up the savory, herbed broth. Creating a symphony of flavors. That feels like a cozy hug. In every bite. Perfect for chilly evenings. Or anytime you need a touch of comfort. This dish is not just food. It's a warm, delicious escape. That promises to gather smiles. Around the dinner table.
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Servings: 6
Ingredients
- 1/4 c unsalted butter
- 5 medium Vidalia onions thinly sliced (about 3 lb.)
- 2 teaspoon kosher salt
- 1/2 teaspoon black pepper
- 3 thyme sprigs
- 2 flat-leaf parsley sprigs
- 2 bay leaves
- 1 16-ounces baguette, thinly sliced
- 1/3 c all-purpose flour
- 3 c reduced-sodium beef broth
- 1/2 c sherry
- 8 ounces Gruyère cheese shredded (about 2 cups)
- 1 teaspoon fresh thyme leaves
Instructions
Prepare the Onions:
- In a large Dutch oven, melt the butter over medium-low heat.
- Add the sliced onions, salt, pepper, thyme sprigs, parsley sprigs, and bay leaves.
- Cook, stirring occasionally, until the onions are golden brown, about 1 hour.
Toast the Baguette:
- While the onions cook, preheat your oven to 350°F (175°C).
- Arrange baguette slices in a single layer on a baking sheet.
- Bake for 12 minutes until lightly toasted. Set aside.
Make the Sauce:
- Remove the herb sprigs and bay leaves from the onion mixture.
- Stir in the flour and cook for 2 minutes, stirring constantly.
- Add the beef broth and sherry, bring to a boil, and cook for 2-3 minutes until slightly thickened.
Assemble the Casserole:
- In a 13x9 inch baking dish, layer half of the toasted baguette slices.
- Spoon the onion mixture evenly over the bread.
- Top with the remaining baguette slices.
- Sprinkle evenly with shredded Gruyère cheese.
- Cover the dish with aluminum foil.
Bake the Casserole:
- Bake covered at 350°F for 30 minutes.
- Remove the foil, switch the oven to broil, and broil for about 3 minutes until the cheese is bubbly.
Finish and Serve:
- Sprinkle fresh thyme leaves over the top.
- Serve warm and enjoy!
Notes
To enjoy a delightful gluten-free version. Of this Cheesy French Onion Baked Casserole. Simply swap out the regular baguette. For your favorite gluten-free baguette. Many grocery stores. Now carry a variety of gluten-free bread options. That mimic the texture. And flavor of traditional bread. When selecting your gluten-free bread. Opt for one that toasts well. As this will help maintain the delightful crunch. And structure in the casserole. Additionally, ensure that your beef broth. And sherry are labeled gluten-free. As some brands. May include additives. That contain gluten. With these simple substitutions. You can savor this comforting dish. Without worry!