Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
If you’re looking for a breakfast dish that’s bursting with savory flavors and cozy textures, you have to try the Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe. This dish brings together flaky croissants layered with creamy, cheesy sausage filling and just the right kick of green onions, making it a total crowd-pleaser. Imagine biting into golden baked croissants soaked in a luscious egg custard, studded with paprika-spiced sausage and melty white cheddar—it’s pure morning magic wrapped up in one satisfying casserole.
Ingredients You’ll Need
Every ingredient in this recipe plays a vital role in creating that perfect balance of creaminess, tang, and savory depth. They are simple to find but come together to deliver layers of flavor and mouthwatering texture. Let’s dive into what you’ll need:
- Croissants, 8–10 small/medium, stale: Using stale croissants helps them soak up the egg custard without falling apart, creating a custardy base with a slight crunch.
- Olive oil, 1 tablespoon: For browning the sausage and vegetables, adding a subtle richness without overpowering the dish.
- Breakfast sausage, 1 lb: The star protein adding savory, spiced meaty goodness to the casserole.
- Yellow onion, ½ diced: Adds sweetness and gentle sharpness to balance the richness.
- Red bell pepper, 1 diced: Brings a pop of color and mild sweetness that brightens the whole dish.
- Cream cheese, 4 oz at room temperature: Makes the filling luxuriously creamy and helps bind everything together.
- White cheddar, 2 cups grated (divided): Sharp, melty, and gooey—part of it is mixed in, and the rest tops the casserole for a golden finish.
- Green onions, 3 sliced: Fresh, slightly pungent notes to lighten and enliven each bite.
- Paprika, ½ teaspoon: Adds a touch of smoky warmth without heat.
- Eggs, 10: The rich custard base that holds this entire breakfast creation together.
- Half and half, 1¼ cups: Ensures a creamy, silky texture in the custard.
- Dijon mustard, 1 tablespoon: A subtle tang that enhances the overall flavor complexity.
- Hot sauce, 2 tablespoons: Provides just the right amount of spice and depth.
- Everything bagel seasoning, 2 tablespoons: For that irresistible crunchy, savory topping.
- Kosher salt, about 1 teaspoon divided: Enhances the natural flavors of every ingredient.
- Freshly cracked pepper, about ½ teaspoon divided: Adds a bright, spicy note to balance the richness.
How to Make Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Step 1: Brown the Meat and Veggies
Start by heating olive oil in a skillet over medium heat. Add the breakfast sausage and break it apart with a spoon as it cooks until mostly browned. Then toss in the diced yellow onion and red bell pepper, cooking until the veggies release their fragrance and soften. Once they’re cooked, remove the skillet from heat and let the mixture cool to room temperature. This step builds the foundational flavors that will make the casserole sing.
Step 2: Mix the Filling
In a large bowl, combine the cooled sausage mixture with cream cheese, 1½ cups of shredded white cheddar, paprika, and sliced green onions. Stir until everything is well blended and creamy. This luscious filling will be the rich, melty center of your casserole, perfectly balancing savory and creamy elements.
Step 3: Prep the Croissants
Slice each croissant in half lengthwise. Lightly grease a 9×13 inch baking dish with nonstick spray or butter to prevent sticking. Arrange the croissant bottoms evenly across the dish. Spoon the sausage and cream cheese filling evenly over the bottoms, then place the top halves back on like sandwiches. This layering traps the filling beautifully for each bite.
Step 4: Mix the Eggs
Whisk together eggs, half and half, Dijon mustard, hot sauce, ½ teaspoon kosher salt, and ½ teaspoon freshly cracked pepper until the mixture is smooth and uniform. You can use a blender or a mixing bowl with a whisk to achieve this. This custard will soak into the croissants, making the casserole irresistibly moist and flavorful.
Step 5: Pour and Set
Reserve about 2 tablespoons of the egg mixture for brushing later. Pour the remaining egg custard evenly over and around the croissant sandwiches in the baking dish. Cover the casserole and let it soak at room temperature for at least 1 hour. If you aren’t planning to bake right away, refrigerate it overnight. This soak time allows the croissants to absorb the custard fully, creating that perfect soft yet structured texture.
Step 6: Preheat the Oven
When you’re ready to bake, preheat your oven to 375°F (190°C). Having a properly heated oven ensures your casserole cooks evenly and the top browns beautifully.
Step 7: Bake
Just before baking, brush the tops of the croissants with the reserved egg mixture. Sprinkle the casserole with everything bagel seasoning and the remaining white cheddar to create a flavorful, crunchy, melted top layer. Bake uncovered for 40 to 45 minutes, until the custard is set, the cheese is bubbly, and the top is golden brown. Let it rest for a few minutes before serving to set up perfectly.
How to Serve Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Garnishes
A sprinkle of fresh chopped parsley or extra green onions on top brightens the dish visually and adds a fresh bite. You can also add a dollop of sour cream or a few slices of ripe avocado to add creaminess and balance the spicy sausage filling.
Side Dishes
This casserole pairs wonderfully with simple fruit salad for a touch of natural sweetness or roasted breakfast potatoes for an extra hearty meal. A crisp green salad with lemon vinaigrette is a great fresh contrast that rounds out the richness.
Creative Ways to Present
For a brunch gathering, try serving the casserole in small individual ramekins for perfectly portioned servings. You can also top each serving with a fried or poached egg to add even more indulgence. Alternatively, cut the casserole into squares and serve with fresh herbs and a drizzle of hot sauce on the side for a festive touch.
Make Ahead and Storage
Storing Leftovers
After enjoying your feast, store leftovers in an airtight container in the refrigerator for up to 3 days. The casserole keeps well and the flavors even deepen overnight, making it a perfect next-day breakfast or snack.
Freezing
You can freeze the casserole before baking by wrapping it tightly in plastic wrap and then foil. It will keep well in the freezer for up to 2 months. When ready to eat, thaw it overnight in the fridge before baking as directed.
Reheating
To reheat leftovers, warm them in a preheated oven at 350°F (175°C) for about 15-20 minutes until heated through and piping hot. Avoid the microwave if possible to keep that lovely croissant texture intact and prevent sogginess.
FAQs
Can I use fresh croissants instead of stale ones?
While fresh croissants can work, stale croissants absorb the egg custard better, resulting in a custardy yet firm texture. If using fresh, consider toasting them lightly first or allowing more soak time for the custard.
Is it possible to make this recipe vegetarian?
Absolutely! You can swap the breakfast sausage for plant-based sausage or sautéed mushrooms and bell peppers for a vegetarian version that still packs plenty of flavor.
Can I prepare this casserole the night before?
Yes! In fact, letting the casserole soak overnight in the fridge enhances the flavors and helps the croissants absorb the custard perfectly, making your morning easier.
What type of cheese is best for this recipe?
White cheddar is ideal due to its sharpness and melting qualities, but feel free to experiment with Swiss or mozzarella if you want a different flavor or texture.
How spicy is this casserole?
The hot sauce adds a gentle background kick without overwhelming heat, and paprika provides warmth. You can always adjust the hot sauce amount to suit your preferred spice level.
Final Thoughts
This Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe is a delightful way to elevate your breakfast or brunch. It’s rich, comforting, and perfect for feeding a crowd or treating yourself during a lazy weekend morning. I can’t recommend it enough—grab your ingredients and dig into this spectacular casserole that’s guaranteed to become a new favorite in your recipe rotation.
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Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
- Total Time: 2 hours 15 minutes
- Yield: 8 servings 1x
Description
This Croissant Breakfast Casserole combines flaky, buttery croissants with a savory filling of breakfast sausage, cream cheese, cheddar, and green onions. Soaked in a flavorful egg custard with Dijon mustard and hot sauce, then baked until golden and bubbly, it makes an indulgent breakfast or brunch dish perfect for feeding a crowd.
Ingredients
Croissants and Base
- 8 – 10 small/medium croissants, stale
- 1 tablespoon olive oil
Sausage Filling
- 1 lb breakfast sausage
- 1/2 yellow onion, diced
- 1 red bell pepper, diced
- 4 oz cream cheese, room temperature
- 1 1/2 cups white cheddar, grated (from the 2 cups total)
- 3 green onions, sliced
- 1/2 teaspoon paprika
Egg Mixture
- 10 eggs
- 1 1/4 cups half and half
- 1 tablespoon Dijon mustard
- 2 tablespoons hot sauce (such as Frank’s or Tabasco)
- 1/2 teaspoon kosher salt (for egg mixture)
- 1/2 teaspoon freshly cracked pepper (for egg mixture)
Topping
- Remaining 1/2 cup white cheddar, grated
- 2 tablespoons everything bagel seasoning
- Kosher salt (about 1/2 teaspoon for seasoning)
- Freshly cracked pepper (about 1/4 teaspoon for seasoning)
Instructions
- Brown the meat and veggies: Heat 1 tablespoon olive oil in a skillet over medium heat. Add the breakfast sausage and cook, breaking it apart with a spoon until mostly cooked through. Then add the diced yellow onion and red bell pepper. Cook until the vegetables are soft and fragrant. Remove from heat and set aside to cool to room temperature.
- Mix the filling: In a large bowl, combine the cooled sausage mixture with cream cheese, 1 1/2 cups shredded white cheddar, paprika, and sliced green onions. Mix thoroughly until well incorporated and creamy.
- Prep the croissants: Slice the croissants in half lengthwise. Lightly grease a 9×13 inch baking dish with nonstick spray or butter. Arrange the bottom halves of croissants evenly in the baking dish. Divide the sausage filling evenly over the croissant bottoms, then place the top halves back over the filling to form sandwiches. Set aside.
- Mix the eggs: In a blender or mixing bowl, whisk together eggs, half and half, Dijon mustard, hot sauce, 1/2 teaspoon kosher salt, and 1/2 teaspoon freshly cracked pepper until very smooth and uniform.
- Pour and set: Reserve about 2 tablespoons of the egg mixture for brushing later. Pour the remaining egg mixture evenly around and over the croissant sandwiches in the dish. Cover the casserole and let it soak at room temperature for at least 1 hour, or refrigerate overnight to allow croissants to fully absorb the egg custard.
- Preheat the oven: When ready to bake, preheat oven to 375°F (190°C).
- Bake: Before baking, brush the croissants lightly with reserved egg mixture. Sprinkle the entire casserole with everything bagel seasoning and remaining shredded white cheddar on top. Bake uncovered for 40 to 45 minutes, or until custard is set, top is golden brown, and cheese is melted and bubbly. Let rest a few minutes before serving.
Notes
- Using stale croissants helps them absorb the egg custard without getting too soggy.
- The soaking step is key for a custardy, tender texture—don’t skip the resting time.
- Feel free to swap the breakfast sausage with cooked bacon or vegetarian sausage if preferred.
- Adjust hot sauce quantity to your spice preference.
- Everything bagel seasoning adds a flavorful crunch—don’t omit it as a topping.
- Leftovers can be refrigerated and reheated gently in the oven or microwave.
- Prep Time: 30 minutes
- Cook Time: 45 minutes
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
