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–+ servings
Croissant Breakfast Casserole

Decadent Croissant Breakfast Casserole for Ultimate Brunch Joy

This Croissant Breakfast Casserole combines croissants, bacon, and Gruyere cheese for a delightful brunch experience.
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Prep Time 15 minutes
Cook Time 45 minutes
Cooling Time 10 minutes
Total Time 1 hour 10 minutes
Servings: 8 servings
Course: Breakfast
Cuisine: American
Calories: 350
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 6 croissants stale or day-old croissants
  • 8 oz bacon or turkey bacon for a lighter option
  • 1 cup Gruyere Cheese or substitute with mozzarella and Parmesan
  • 1 cup White Cheddar Cheese or regular cheddar as an alternative
  • 6 large Eggs no substitute recommended
  • 1 cup Whole Milk or half-and-half for a lighter replacement
For Flavoring
  • 1/2 cup Heavy Cream or substitute with milk
  • 1 tsp Sage or fresh thyme as an alternative
  • 1 tbsp Dijon Mustard or yellow mustard if necessary
  • 1 tsp Kosher Salt to taste
  • 1 tsp Black Pepper to taste
For Garnish
  • 1/4 cup Fresh Chives or green onions

Equipment

  • 9x13-inch baking dish
  • large skillet
  • Medium-sized bowl
  • whisk

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish with nonstick spray.
  2. Cook bacon in a skillet over medium heat for 4-5 minutes until crispy, then transfer to the baking dish.
  3. Sprinkle half of the Gruyere and white cheddar over the bacon. Tear croissants into bite-sized pieces and scatter them over the cheese.
  4. Whisk together eggs, whole milk, heavy cream, sage, Dijon mustard, kosher salt, and black pepper in a bowl.
  5. Pour the egg mixture evenly over the croissants and cheese.
  6. Bake for 40-45 minutes until golden and set. If browning too quickly, cover with foil.
  7. Allow to cool for 5-10 minutes, then garnish with chives before serving.

Nutrition

Serving: 1sliceCalories: 350kcalCarbohydrates: 25gProtein: 15gFat: 22gSaturated Fat: 10gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 200mgSodium: 800mgPotassium: 300mgFiber: 1gSugar: 2gVitamin A: 500IUVitamin C: 1mgCalcium: 250mgIron: 1.5mg

Notes

This Croissant Breakfast Casserole is a crowd-pleaser perfect for brunch, easy to prepare in advance, and customizable with various ingredients.

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