If you’ve ever dreamed of a breakfast dish that combines buttery croissants, savory sausage, tangy cream cheese, and fresh green onions into one irresistible morning masterpiece, you’re in for a treat with this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe. It’s comfort food elevated with a playful twist, creating a casserole that’s delightfully rich, packed with flavor, and perfect for feeding a hungry crowd. Whether it’s a weekend brunch or a special occasion, this dish promises to wow everyone around the table.
Ingredients You’ll Need
Trust me, the magic of this casserole lies in its simplicity. Each ingredient has a role that adds depth, creaminess, or a pop of freshness that keeps every bite exciting and balanced.
- Croissants (8 – 10 small/medium, stale): Using slightly stale croissants helps absorb the custard perfectly without becoming too soggy.
- Olive oil (1 tablespoon): A little oil for browning the sausage brings out rich, caramelized flavors.
- Breakfast sausage (1 lb): Adds a savory, juicy component that pairs wonderfully with the creamy layers.
- Yellow onion (1/2, diced): Offers sweetness and a subtle crunch when cooked down.
- Red bell pepper (1, diced): Brings vibrant color and a hint of natural sweetness.
- Cream cheese (4 oz, room temperature): Creates a smooth, tangy base that melts into luscious pockets throughout the casserole.
- White cheddar (2 cups grated): Split into 1 1/2 cups for the filling and the rest for topping, it adds sharpness and gooey melty goodness.
- Green onions (3, sliced): Fresh and mildly pungent, they brighten up the rich flavors.
- Paprika (1/2 teaspoon): Provides a subtle smoky warmth that ties everything together.
- Eggs (10): The custard’s backbone that binds all elements and gives the casserole structure.
- Half and half (1 1/4 cups): Keeps the custard silky and creamy without heaviness.
- Dijon mustard (1 tablespoon): Adds a gentle tang that enhances all the savory notes.
- Hot sauce (2 tablespoons): Give it a flavorful kick—choose your favorite like Frank’s or Tabasco.
- Everything bagel seasoning (2 tablespoons): A genius topping that adds crunch, flavor, and an irresistible aroma.
- Kosher salt (about 1 teaspoon divided): Essential for seasoning and bringing out true flavors.
- Freshly cracked pepper (about 1/2 teaspoon divided): Adds just the right amount of bite and warmth.
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. Toss in the breakfast sausage, breaking it apart with a spoon, and cook until it’s mostly browned but still juicy. Next, add the diced yellow onion and red bell pepper. Cook everything together until the vegetables soften and become fragrant. This simple step builds a savory foundation packed with flavor and texture, so be patient and let those aromatics do their magic. Once done, set it aside to cool to room temperature.
Step 2: Mix the filling
Now comes the fun part: melding creamy with savory. In a large bowl, combine the cooled sausage mixture with the room temperature cream cheese. Toss in 1 1/2 cups of shredded white cheddar, a touch of paprika, and those vibrant sliced green onions. Stir everything thoroughly until you have a creamy, richly textured mixture that tastes like pure breakfast happiness.
Step 3: Prep the croissants
Slice your croissants in half lengthwise to create little sandwiches. Lightly grease a 9×13 inch baking dish to keep them from sticking. Arrange the croissant bottoms evenly in the dish, then evenly spread the sausage and cream cheese filling on top. Finish by placing the croissant tops back over the filling. This layering technique ensures every bite is packed with that delicious filling and buttery bread.
Step 4: Mix the eggs
In a blender or mixing bowl, whisk together the eggs, half and half, Dijon mustard, hot sauce, and half of your kosher salt and black pepper. Blend or whisk until the custard is completely smooth and uniform in texture. This rich custard will soak into the croissants and meld all the flavors into one irresistible dish.
Step 5: Pour and set
Reserve about 2 tablespoons of the egg mixture for later brushing. Pour the remaining custard evenly over the croissant sandwiches, making sure it seeps around and inside. Cover the dish and let it soak for at least an hour at room temperature, or for best results, refrigerate overnight. This wait allows the croissants to soak up the custard fully, making the final casserole beautifully moist and flavorful.
Step 6: Preheat the oven
When you’re ready to bake, preheat your oven to 375°F (190°C). This heat level is perfect for cooking the casserole through while developing a golden, melty top.
Step 7: Bake
Before sliding the casserole into the oven, brush the croissant tops lightly with the reserved egg mixture. Then sprinkle everything bagel seasoning and the remaining shredded white cheddar evenly on top. Bake uncovered for 40 to 45 minutes until the custard is set, the top is gorgeously golden brown, and the cheese is melted, bubbly, and inviting. Let it rest for a few minutes before serving so it settles perfectly.
How to Serve Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Garnishes
Fresh garnishes elevate this casserole beautifully. Sprinkling extra sliced green onions or a handful of fresh chopped parsley adds color and brightness. If you love a bit of heat, a drizzle of your favorite hot sauce or a sprinkle of red chili flakes is fantastic. A dollop of sour cream or a spoonful of fresh salsa on the side complements the creamy, savory flavors wonderfully.
Side Dishes
This casserole shines as the star, but pairing it with fresh fruit salad or lightly dressed mixed greens adds a refreshing contrast that balances the richness. Roasted potatoes or crispy hash browns are classic companions if you want a heartier brunch spread. A simple glass of freshly squeezed orange juice or a robust cup of coffee rounds out the morning experience delightfully.
Creative Ways to Present
For brunch gatherings, cut the casserole into individual squares and serve on bright, colorful plates to make the vibrant ingredients pop. You can also pack it into muffin tins for portable, single-serving portions perfect for meal prep or picnics. For an elegant touch, serve alongside mini herb-infused croissants or a rustic bread basket to give guests options for soaking up extra sauce and custard.
Make Ahead and Storage
Storing Leftovers
This casserole keeps exceptionally well in the fridge for up to 4 days. Cover tightly with plastic wrap or transfer to an airtight container to maintain moisture and freshness. Leftovers taste fantastic cold or warmed up, making for quick breakfasts or lunches.
Freezing
If you want to save some for later, freeze the casserole after baking by wrapping it well in foil and placing in a freezer-safe container. It will keep well for up to 2 months. For best texture, thaw overnight in the fridge before reheating.
Reheating
To reheat, warm individual portions in the microwave for 1 to 2 minutes or reheat the whole casserole uncovered in a 350°F (175°C) oven until heated through and the cheese bubbles up again. Adding a splash of milk helps restore creamy texture if the casserole seems a bit dry.
FAQs
Can I use fresh croissants instead of stale ones?
While fresh croissants can work, slightly stale croissants are better at absorbing the custard without falling apart, which gives you the perfect casserole texture.
Is it possible to make this recipe vegetarian?
Absolutely! You can substitute the sausage with plant-based sausage or sautéed mushrooms and additional veggies to keep the hearty flavor without meat.
Can I prepare this casserole the night before?
Yes! In fact, letting it soak overnight enhances the flavors and texture, making the casserole more cohesive and custardy.
What can I use instead of cream cheese?
If you don’t have cream cheese, ricotta or mascarpone cheese can provide a similar creamy texture, though the flavor will be a bit milder.
How spicy is this casserole?
The heat level depends on the hot sauce you use. You can adjust the amount or skip it for a milder dish, so it’s completely customizable to your spice preference.
Final Thoughts
This Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe is one of those dishes that feels special yet effortless—a true crowd-pleaser any time of year. It combines flaky, buttery croissants with a luscious custard and savory fillings that bring pure joy with every bite. I can’t wait for you to try it out and make it a favorite in your kitchen for weekend brunches or holiday mornings. You’re going to love how easy it comes together and how satisfying every serving tastes!
Print
Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
- Prep Time: 45 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 savory, indulgent morning dish perfect for brunch or a special breakfast. Featuring layers of flaky croissants filled with a creamy sausage and cheese mixture, soaked in a flavorful egg custard, and baked until golden and bubbly, this casserole combines rich textures and bold flavors for a satisfying start to your day.
Ingredients
Base Ingredients
- 8 – 10 small/medium croissants, stale
- 1 tablespoon olive oil
Sausage & Veggie Filling
- 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. Add the diced yellow onion and red bell pepper and continue cooking 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 the cream cheese, 1 1/2 cups of 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 the croissants evenly in the 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 the 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 the remaining egg mixture evenly around and over the croissant sandwiches. Cover and let soak at room temperature for at least 1 hour, or refrigerate overnight, allowing croissants to absorb the custard fully.
- Preheat the oven: When ready, preheat the oven to 375°F (190°C).
- Bake: Before baking, brush the croissants lightly with the reserved egg mixture. Sprinkle the entire casserole with everything bagel seasoning and the remaining shredded white cheddar. Bake uncovered for 40 to 45 minutes, until custard is set, top is golden brown, and cheese is bubbly. Let rest a few minutes before serving.
Notes
- Using stale or day-old croissants helps them soak up the egg custard better without becoming too soggy.
- Feel free to substitute breakfast sausage with sausage of your choice or use a vegetarian sausage alternative.
- The casserole can be assembled the night before and refrigerated to enhance flavor and make morning prep easier.
- For extra cheesiness, sprinkle additional cheddar or a mix of other cheeses on top before baking.
- Adjust the amount of hot sauce to suit your heat preference or omit if you prefer milder flavors.
