sausage croissant breakfast casserole recipe
The Best sausage croissant breakfast casserole recipe
I’ve always found that breakfast casseroles are perfect for making the most of leftovers—whether it’s extra croissants from the bakery, leftover sausage from last night’s dinner, or even a bit of cheese that’s been sitting in the fridge. It’s a great way to feed a crowd without feeling like you’re making a big, fancy meal. And honestly, it’s one of those recipes that tastes even better the next day, so it’s a lifesaver for meal prep too. Plus, it’s got the right balance of protein and carbs to keep everyone full without feeling too heavy. It’s not just a breakfast dish—it’s a go-to for game days, family gatherings, or just a lazy Sunday morning when you want something warm and hearty.

Sausage Croissant Breakfast Casserole
A comforting, layered casserole featuring flaky croissant dough, savory sausage, and creamy tomato sauce—perfect for a weekend brunch or weeknight meal. This recipe is a must-try for any occasion.
🥘Ingredients
- 1 package frozen puff pastry (18-inch sheet)
- 1 tbsp melted butter
- 1 lb ground sausage (mild or spicy)
- 1 cup diced bell peppers
- 1 small onion, finely chopped
- 1 cup shredded cheddar cheese
- 1 cup tomato sauce
- 1 tsp dried oregano
👨🍳Directions
-
1
Preheat oven to 375°F. Unroll the puff pastry on a lightly floured surface and cut it into 6 equal rectangles (about 3 inches wide). -
2
In a skillet over medium heat, brown the sausage, breaking it into crumbles. Add bell peppers and onion, cooking until softened (5–6 mins). Stir in tomato sauce and oregano, then remove from heat. -
3
Spread half the tomato-sausage mixture evenly over the bottom of a 9×13-inch baking dish. Sprinkle half the cheese on top. Arrange 3 croissant rectangles over the filling, pressing gently to adhere. Repeat with remaining filling, cheese, and croissant. -
4
Cover the dish with foil and bake for 20 minutes. Remove foil and bake 10 more minutes until golden brown and bubbling.
🔧Equipment
- Mixing bowl
- Cutting board
- Baking dish (9×13 inches)
- Knife
- Oven
📊Nutrition Facts (per serving)
📝Notes
Watch Video Of How Sausage Croissant Breakfast Casserole Works
❓ Frequently Asked Questions About Sausage Croissant Breakfast Casserole
1. What is the best way to reheat this sausage croissant breakfast casserole to keep it crispy on top?
To maintain a crispy top layer, reheat in a preheated oven at 350°F (175°C) for 15–20 minutes, covered with foil for the first 10 minutes then uncovered until golden. Alternatively, transfer to an air fryer at 375°F (190°C) for 5–7 minutes, shaking halfway through.
2. Can I substitute any of the ingredients if I don’t have fresh croissants?
Yes! Use store-bought puff pastry sheets (thawed) or even a pre-made croissant dough (baked according to package instructions). For a shortcut, roll out plain puff pastry and brush lightly with melted butter before adding the filling.
3. How long can I safely prep this dish ahead of time?
Assemble the casserole and refrigerate up to 24 hours before baking. If making ahead, refrigerate the assembled dish (without baking) and bake directly from frozen, adding 5–10 extra minutes to the bake time.
4. Why does my sausage croissant casserole taste bland?
A few common fixes: Ensure your sausage is fully cooked and browned before adding to the mixture. Boost flavor with a splash of hot sauce, a pinch of smoked paprika, or a sprinkle of fresh herbs (like thyme or rosemary) on top before baking. If using store-bought croissants, check if they contain excessive salt—balance with a pinch of black pepper or garlic powder.
