If you are craving a delightful brunch that skillfully blends flaky croissants with savory sausage, luscious cream cheese, and fresh green onions, then this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe is exactly what you need. It delivers a comforting yet indulgent experience with every bite, combining the buttery layers of croissants soaked in a creamy, cheesy egg custard and dotted with vibrant flavors that will brighten up your morning or any breakfast occasion.
Ingredients You’ll Need
This recipe shines because of its straightforward, accessible ingredients, each chosen to bring out the best in taste, texture, and color. Together, they create a harmonious dish that feels both homey and a little special.
- Croissants (8 – 10 small/medium, stale): Using slightly stale croissants helps them absorb the custard perfectly without becoming overly soggy.
- Olive oil (1 tablespoon): Adds a subtle richness when cooking sausage and veggies, enhancing their flavor.
- Breakfast sausage (1 lb): Provides a savory, slightly spicy backbone with plenty of hearty flavor.
- Yellow onion (1/2, diced): Adds sweetness and depth, softening as it cooks to balance the sausage’s spice.
- Red bell pepper (1, diced): Offers a fresh, slightly sweet crunch and vibrant color contrast.
- Cream cheese (4 oz, room temperature): Brings dreamy creaminess that binds everything together for a luscious texture.
- White cheddar (2 cups, grated): Sharp and melty, it’s divided to mix throughout and sprinkled on top for ooey-gooey goodness.
- Green onions (3, sliced): Infuse the dish with a mild, fresh onion flavor and a pop of green color.
- Paprika (1/2 teaspoon): Adds a subtle smoky warmth that enhances the overall flavor profile.
- Eggs (10): The essential custard base that brings structure and richness to the casserole.
- Half and half (1 1/4 cups): Keeps the custard luxuriously creamy without being too heavy.
- Dijon mustard (1 tablespoon): Adds a gentle tang and complexity that brightens the egg mixture.
- Hot sauce (2 tablespoons): Gives a kick of heat to balance the richness and add depth.
- Everything bagel seasoning (2 tablespoons): Sprinkled on top for a crunchy, flavorful finish that brings it all together.
- Kosher salt & fresh cracked pepper: Basic seasonings vital for enhancing every ingredient’s natural flavor.
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, then add the breakfast sausage, breaking it apart with a spoon. Cook until it’s almost fully browned. Next, add diced yellow onion and red bell pepper, sautéing until they’re tender and fragrant. This combination builds the flavorful foundation of the casserole, so take your time here to develop those deep, savory notes. Once cooked, set the mixture aside to cool slightly.
Step 2: Mix the Filling
In a large bowl, combine the cooled sausage and vegetable mix with the cream cheese, 1½ cups of shredded white cheddar, paprika, and sliced green onions. Stir everything well until it’s creamy and evenly blended. The cream cheese melts into the mixture, giving it a luscious texture that envelops every piece of croissant later on.
Step 3: Prep the Croissants
Slice the croissants in half lengthwise and lightly grease a 9×13 inch baking dish. Arrange the bottom halves of the croissants evenly in the dish, then spoon the sausage filling over them carefully. Top each with the remaining croissant halves, effectively making little sandwiches. This layering ensures every bite is a perfect mix of flaky bread and savory filling.
Step 4: Mix the Eggs
In either a blender or a large bowl, whisk together the eggs, half and half, Dijon mustard, hot sauce, kosher salt, and cracked pepper until the mixture is smooth and consistent. This rich egg custard is the magic that transforms the croissants into a soft, custardy delight once baked.
Step 5: Pour and Set
Reserve about two tablespoons of the egg mixture for brushing later. Pour the rest evenly over and around the croissant sandwiches in the baking dish, ensuring everything is soaked well. Cover and let it rest for at least an hour at room temperature or refrigerate overnight. This soaking time lets the croissants absorb the custard completely, resulting in a perfect texture after baking.
Step 6: Preheat the Oven
When you’re ready to bake, preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). This temperature ensures the casserole cooks evenly without drying out.
Step 7: Bake
Before baking, brush the croissants lightly with the reserved egg mixture to help them brown beautifully. Sprinkle everything bagel seasoning and the remaining white cheddar cheese generously over the top. Bake uncovered for 40 to 45 minutes until the custard sets, the top turns golden, and the cheese becomes bubbly and melted. Let it rest a few minutes before serving to let the flavors settle and slicing become easier.
How to Serve Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Garnishes
Add a sprinkle of fresh chopped parsley or extra sliced green onions for a bright, fresh finish that complements the richness perfectly. A light drizzle of hot sauce or a dollop of sour cream can also elevate each serving, giving an extra layer of flavor that guests will love.
Side Dishes
Pair this casserole with a crisp green salad, fresh fruit salad, or roasted breakfast potatoes to round out the meal. The freshness and crunch of sides balance the hearty, creamy main dish beautifully, creating a well-rounded brunch or breakfast spread.
Creative Ways to Present
Try serving the casserole in individual ramekins for elegant single portions at a brunch party. You can also cut the fully baked casserole into squares and stack them with a garnish of microgreens or avocado slices for a fresh twist that looks as good as it tastes.
Make Ahead and Storage
Storing Leftovers
Wrap any leftover casserole tightly in plastic wrap or transfer it to an airtight container and refrigerate. It will keep well for up to 3 days, allowing you to enjoy just as much comfort the next morning.
Freezing
This casserole freezes wonderfully. Prepare it fully baked or unbaked, then store it in a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator before reheating, so it maintains its texture and flavor integrity.
Reheating
Reheat individual portions in the microwave for about 1 to 2 minutes until warmed through, or cover with foil and bake in a 350°F oven for 15 to 20 minutes for a fresher, just-baked taste and texture.
FAQs
Can I use other types of bread instead of croissants?
Absolutely! While croissants provide a buttery, flaky texture that’s hard to beat, you can substitute with brioche or even sturdy white bread. Keep in mind the texture and flavor will vary, but the casserole will still be delicious.
Is it necessary to use stale croissants?
Stale or day-old croissants are best as they soak up the egg custard better without becoming mushy. Fresh croissants can be used but may result in a softer, less structured casserole.
Can I make this recipe vegetarian?
Yes! Simply swap the sausage for a plant-based sausage or add extra vegetables like mushrooms, spinach, or zucchini. The cream cheese and cheese blends will keep the dish rich and satisfying.
How spicy is this dish with the hot sauce included?
The hot sauce adds a gentle background heat that lifts the flavors without overwhelming the dish. You can adjust the amount or omit it if you prefer something milder.
How long can I soak the casserole before baking?
You can let the casserole soak for anywhere from 1 hour at room temperature up to overnight in the fridge. Longer soaking allows the croissants to absorb more custard and enhances the overall texture.
Final Thoughts
Trust me, once you try this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe, it’ll become a go-to for any special breakfast or brunch occasion. The blend of flaky croissants, creamy cheese, and savory sausage is just downright irresistible. So gather your ingredients, and treat yourself and your loved ones to a morning meal that feels truly special yet is surprisingly easy to make!
Print
Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
- Prep Time: 30 minutes
- Cook Time: 45 minutes
- Total Time: 2 hours 15 minutes
- Yield: 8 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: American
Description
This Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions is a decadent and hearty morning dish perfect for brunch or a weekend breakfast. Featuring savory breakfast sausage, creamy cheese layers, and flaky croissants soaked in a flavorful egg custard, this casserole combines rich textures and bold flavors with a spicy Dijon and hot sauce kick. It’s a make-ahead recipe ideal for soaking overnight, then baked to golden perfection with a crispy cheesy topping.
Ingredients
Croissant Sandwich Layer
- 8 – 10 small/medium croissants, stale
- 1 tablespoon olive oil
- 1 lb breakfast sausage
- 1/2 yellow onion, diced
- 1 red bell pepper, diced
- 4 oz cream cheese, room temperature
- 2 cups white cheddar, grated (divided: 1 1/2 cups for mixture, remainder for topping)
- 3 green onions, sliced
- 1/2 teaspoon paprika
Egg Custard Mixture
- 10 eggs
- 1 1/4 cups half and half
- 1 tablespoon Dijon mustard
- 2 tablespoons hot sauce (such as Frank’s or Tabasco)
- 2 tablespoons everything bagel seasoning
- Kosher salt (about 1 teaspoon divided)
- Freshly cracked pepper (about 1/2 teaspoon divided)
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 and cook until the vegetables are soft and fragrant. Remove from heat and let 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. Stir until well incorporated and creamy.
- Prep the croissants: Slice croissants in half lengthwise. Lightly grease a 9×13 inch baking dish with nonstick spray or butter. Arrange croissant bottoms evenly in the dish. Evenly divide the sausage filling 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 smooth and uniform.
- Pour and set: Reserve about 2 tablespoons of the egg mixture for brushing later. Pour remaining egg mixture evenly over and around the croissant sandwiches. Cover the casserole and let it soak at room temperature for at least 1 hour, or refrigerate overnight, allowing croissants to absorb the custard fully.
- Preheat the oven: When ready to bake, preheat oven to 375°F (190°C).
- Bake: Before baking, brush croissants lightly with reserved egg mixture. Sprinkle everything bagel seasoning and remaining shredded white cheddar across the top. Bake uncovered for 40 to 45 minutes until custard is fully set, top is golden brown, and cheese is melted and bubbly. Let rest a few minutes before serving.
Notes
- Using stale croissants helps absorb the egg custard better without becoming too soggy.
- The casserole can be prepared the night before and refrigerated to let flavors meld.
- Adjust hot sauce amount according to your preferred spice level.
- Stale croissants can be toasted lightly if very soft, to prevent sogginess.
- Ensure sausage is fully cooked before mixing with cream cheese for food safety.
