If comfort had a flavor, it would taste like this Cheesy Sausage Croissant Breakfast Casserole. Buttery croissants, savory sausage, melty cheese, and creamy eggs come together in one irresistible bake. Perfect for brunch, holidays, or cozy weekend mornings — and bonus, it’s make-ahead friendly!
Why You’ll Love This Cheesy Sausage Croissant Breakfast Casserole
- Flaky, buttery, and cheesy all in one bite
- Perfect for breakfast, brunch, or holidays
- Can be made ahead and baked the next day
- Easy to customize with your favorite add-ins
- Great for feeding a crowd or family gathering
Cheesy Sausage Croissant Breakfast Casserole
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 9×13-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 dietsFAQ
1. Can I use store-bought croissants?
Yes! Day-old or slightly stale croissants work best since they soak up the egg mixture without getting soggy.
2. Can I make this casserole ahead of time?
Absolutely. Assemble it the night before, cover, and refrigerate overnight. Bake fresh in the morning.
3. What cheese works best?
Cheddar and mozzarella are perfect, but you can also use Gruyère, Colby Jack, or even a touch of cream cheese for extra richness.
4. Can I make it vegetarian?
Yes — skip the sausage and add sautéed mushrooms, spinach, or bell peppers.
5. What should I serve it with?
It pairs beautifully with fresh fruit salad, roasted vegetables, or a light green salad.
This Cheesy Sausage Croissant Breakfast Casserole is everything you want in a brunch bake — rich, cozy, and irresistibly cheesy. It’s a guaranteed crowd-pleaser for holidays, potlucks, or lazy Sunday mornings.
If you love flaky croissants and savory breakfast flavors, you’ll also enjoy my Savory Croissant Breakfast Sandwich with Bacon, Eggs & Avocado — a delicious handheld option that’s just as satisfying and perfect for busy mornings or weekend brunches!