Cheesy Croissant Casserole

Name: Cheesy Croissant Casserole
Prep time: 10 min
Total time: 1 h 30 min
Yield: 6 - 8 serving(s)
Ingredients: 6 large croissants, quartered; 6 slices bacon; 8 eggs; 3 c. milk (preferably whole); 1 c. heavy cream; 2 tbsp. finely chopped chives; 2 tsp. chopped thyme leaves; Kosher salt; Freshly ground black pepper; Pinch cayenne; 1 c. shredded Gruyère, divided; 1 c. shredded mozzarella, divided; Butter, for pan

By Lauren MiyashiroUpdated: Nov 30, 2023

4.2

9 Ratings

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preview for This Cheesy Croissant Casserole Slays All Other Breakfast Bakes

When we're serving a brunch crowd, breakfast casseroles are what we turn to. They're simple to put together, extremely versatile, and perfect for serving a large group in a pinch. We have our fair share of recipes—from sweet to savory—but this cheesy croissant casserole is one of our favorites. The contrast between the crispy, flaky edges of the croissant and the soft, cheesy middle is a dream come true. Plus, it couldn't be easier to prepare ahead if time. If you're able to, assemble everything the night before and bake it off the next morning—holiday brunch prep complete!

Tip: If you don't love Gruyère, feel free to use all mozz, or swap it for sharp cheddar!

Made this recipe? Let us know how it went in the comments below!

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Yields:: 6 - 8 serving(s)
Prep Time:: 10 mins
Total Time:: 1 hr 30 mins
Cal/Serv:: 854

Ingredients

6
large croissants, quartered
6
slices bacon
8
eggs
3 c.
milk (preferably whole)
1 c.
heavy cream
2 tbsp.
finely chopped chives
2 tsp.
chopped thyme leaves
Kosher salt
Freshly ground black pepper
Pinch cayenne
1 c.
shredded Gruyère, divided
1 c.
shredded mozzarella, divided
Butter, for pan

Directions

1. Step 1Preheat oven to 450°. Spread croissants on a large baking sheet cut side up and bake until golden brown, 6 minutes.
2. Step 2In a large skillet over medium heat, cook bacon until crispy, about 8 minutes. Drain bacon on a paper towel-lined plate, then chop into bite size pieces.
3. Step 3In a large bowl, whisk together eggs, milk, heavy cream, chives and thyme. Season with salt, pepper and cayenne, then stir in about ¾ cup Gruyère and ¾ cup mozzarella.
4. Step 4Lightly butter a 9-x-13” baking dish. Scatter croissants and cooked bacon into baking dish, then pour egg mixture on top. Press down gently on croissants to make sure they’re fully soaked in the mixture. (If you have time, refrigerate for 30 minutes up to overnight.)
5. Step 5When you're ready to bake casserole, preheat oven to 350°. Top casserole with remaining cheeses. Bake until golden, about 45 minutes. Garnish with more chives and serve warm.