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Overnight Croissant Breakfast Casserole

Overnight Croissant Breakfast Casserole for a Cozy Brunch

Enjoy this Overnight Croissant Breakfast Casserole, the perfect blend of flaky croissants, savory sausage, and gooey cheese for brunch.
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Prep Time 15 minutes
Cook Time 40 minutes
Refrigeration Time 8 hours
Total Time 8 hours 55 minutes
Servings: 8 slices
Course: Breakfast
Cuisine: American
Calories: 320
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 6 pieces Croissants Substitution: Day-old bread, brioche, or bagels for a different texture.
  • 8 large Eggs No substitutions.
  • 2 cups Whole Milk Substitution: Half-and-half or a non-dairy milk like almond milk, though it may alter flavor.
  • 2 cups Shredded Cheddar Cheese Substitution: Mozzarella or feta for a unique taste.
  • 1 pound Cooked Breakfast Sausage Substitution: Omit for a vegetarian option or replace with crumbled tofu or tempeh.
  • 1 cup Diced Bell Pepper Substitution: Any color bell pepper, or use zucchini or spinach for more veggies.
  • 1 cup Diced Onion Substitution: Shallots or leeks can be used.
  • 1 teaspoon Garlic Powder Substitution: Fresh minced garlic (about 2 cloves).
  • to taste Salt Adjust to personal taste.
  • to taste Black Pepper Adjust to personal taste.
  • to taste Paprika Adjust to personal taste.
  • 1/4 cup Fresh Parsley Substitution: Green onions or chives.

Equipment

  • 9x13-inch baking dish
  • Mixing Bowl
  • spatula

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish with cooking spray or butter.
  2. In a large mixing bowl, whisk together eggs, whole milk, garlic powder, salt, black pepper, and paprika until frothy.
  3. Fold croissant pieces into the egg mixture along with cooked sausage, diced bell pepper, and diced onion. Mix gently.
  4. Pour the mixture into the greased baking dish and sprinkle shredded cheddar cheese on top.
  5. Cover the baking dish tightly with plastic wrap and refrigerate overnight or for at least four hours.
  6. Before baking, let the casserole sit at room temperature for about 15 minutes.
  7. Bake uncovered for 35-40 minutes until golden brown on top and the center is set.
  8. Allow to cool for 5 minutes and garnish with fresh parsley before serving.

Nutrition

Serving: 1sliceCalories: 320kcalCarbohydrates: 20gProtein: 15gFat: 22gSaturated Fat: 10gCholesterol: 210mgSodium: 600mgPotassium: 300mgFiber: 1gSugar: 2gVitamin A: 600IUVitamin C: 10mgCalcium: 300mgIron: 2mg

Notes

For a unique twist, feel free to experiment with different cheeses or veggies in the casserole.

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