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Golden-brown sausage croissant breakfast casserole baked in a dish, filled with melted cheese and flaky croissant pieces.

Cheesy Sausage Croissant Breakfast Casserole

Flaky croissants layered with savory sausage, gooey cheese, and creamy eggs — baked to golden perfection. A hearty, crowd-pleasing breakfast casserole that’s both easy and indulgent!
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Prep Time 15 minutes
Cook Time 33 minutes
Cuisine American
Servings 8
Calories 380 kcal

Ingredients
  

  • 6 large croissants cut into pieces
  • 1 lb 450g breakfast sausage
  • 1 cup 115g shredded cheddar cheese
  • ½ cup 60g shredded mozzarella
  • 1½ cups 360ml milk
  • 5 large eggs
  • ½ tsp salt
  • ¼ tsp black pepper
  • ½ tsp garlic powder
  • 2 tbsp chopped parsley optional, for garnish

Instructions
 

  • Preheat oven: to 350°F (175°C). Grease a 9x13-inch baking dish.
  • Cook sausage: In a skillet, brown sausage over medium heat until cooked through. Drain excess fat.
  • Prepare croissants: Tear or cut croissants into large chunks and arrange half in the baking dish.
  • Layer ingredients: Add half the sausage and cheese. Repeat with remaining croissants, sausage, and cheese.
  • Mix egg mixture: In a bowl, whisk eggs, milk, salt, pepper, and garlic powder. Pour evenly over the casserole.
  • Soak: Press down lightly to help the croissants absorb the egg mixture.
  • Bake: 30–35 minutes, or until golden brown and set in the center.
  • Serve: Sprinkle with chopped parsley and enjoy warm.

Notes

Tips & Variations

Make-ahead option: Assemble the casserole the night before, cover, and refrigerate overnight. Bake in the morning.
Add veggies: Include spinach, bell peppers, or onions for color and nutrition.
Cheese swap: Try Swiss, Monterey Jack, or pepper jack for a twist.
Meat alternatives: Substitute sausage with bacon, ham, or turkey sausage.
Mini version: Bake in muffin tins for grab-and-go breakfast bites.

Storage

Refrigerator: Store leftovers in an airtight container for up to 4 days.
Freezer: Freeze baked portions for up to 2 months. Reheat in the oven or microwave.
Reheat: Warm in a 350°F oven for 10 minutes or microwave for 45 seconds per serving.

✅ Suitable for:

High-protein diet,
comfort food diet,
and family-friendly diets

🚫 Not suitable for:

Vegetarian diet,
vegan diet,
dairy-free diet,
low-carb/keto diets
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