If you are on the hunt for a breakfast dish that feels like a warm hug on a plate, look no further than this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe. This irresistible casserole takes flaky, buttery croissants and transforms them into a savory, creamy, and wonderfully textured morning feast that will satisfy the whole family. The combination of spicy sausage, rich cream cheese, tangy green onions, and melty cheddar cheese all baked into a custard soak makes each bite a sensational experience that’s easy to prepare but impressive enough for any occasion.
Ingredients You’ll Need
The magic in this recipe lies in its simple but thoughtfully curated ingredients. Each one plays a vital role, contributing layers of flavor, texture, and color that come together beautifully for the perfect breakfast casserole.
- 8 – 10 small/medium croissants, stale: Slightly stale croissants absorb the egg custard without turning mushy, providing a delightful flaky base.
- 1 tablespoon olive oil: Used for sautéing, it adds just enough richness without overpowering flavors.
- 1 lb breakfast sausage: Adds a flavorful, savory protein punch with a hint of seasoning and spice.
- 1/2 yellow onion, diced: Brings subtle sweetness and aromatic depth when cooked with the sausage.
- 1 red bell pepper, diced: Adds colorful brightness and a mild, fresh crunch to the mix.
- 4 oz cream cheese, room temperature: Creates a luxuriously creamy texture that melds all the savory components together.
- 2 cups white cheddar, grated: Divided into the mixture and topping, it introduces sharp, melty goodness throughout the dish.
- 3 green onions, sliced: Offers a fresh, zesty bite that contrasts perfectly with the richness.
- 1/2 teaspoon paprika: Adds warmth and a subtle earthiness that deepens the flavor profile.
- 10 eggs: The binding agent that creates a custard soak, transforming the croissants into a cohesive casserole.
- 1 1/4 cups half and half: Lightens the egg mixture for a tender, creamy custard.
- 1 tablespoon Dijon mustard: Introduces a gentle tang and complexity that lifts the casserole.
- 2 tablespoons hot sauce: Provides a kick of heat to balance the richness in a perfect way.
- 2 tablespoons everything bagel seasoning: Sprinkled on top for a burst of crunch and a savory, herby finish.
- Kosher salt (about 1 teaspoon divided): Enhances all the flavors naturally without overwhelming.
- Freshly cracked pepper (about 1/2 teaspoon divided): Adds a gentle spiciness that rounds out the taste.
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 use a spoon to break it apart as it cooks until mostly browned and cooked through. Next, toss in diced yellow onion and red bell pepper, cooking them until soft and fragrant. Once they reach that perfect tenderness, remove the skillet from heat and allow the mixture to cool to room temperature. This step builds a flavorful foundation with a beautiful blend of savory sausage and sweet, tender vegetables.
Step 2: Mix the Filling
In a large bowl, combine the cooled sausage-vegetable mixture with room temperature cream cheese, 1 1/2 cups of shredded white cheddar, paprika, and sliced green onions. Stir everything together until silky and well blended. This creamy, cheesy filling is where the casserole starts to develop its distinct, luscious personality that will melt in your mouth.
Step 3: Prep the Croissants
Carefully slice each croissant in half lengthwise. Lightly grease a 9×13 inch baking dish with butter or nonstick spray. Arrange the bottom halves of the croissants evenly in the dish to form a sturdy base layer. Spoon the sausage and cream cheese filling evenly over the croissant bottoms, then place each croissant top back over the filling to create a sandwich effect. This layering is crucial to achieving the perfect balance of crusty croissant and creamy filling in every bite.
Step 4: Mix the Egg Custard
In either a blender or large mixing bowl, whisk together the eggs, half and half, Dijon mustard, hot sauce, half a teaspoon of kosher salt, and freshly cracked pepper until the mixture is uniformly smooth. This rich egg custard will soak into the croissant sandwiches, binding the dish and bringing it all together with a silky custard goodness that is the hallmark of any great breakfast casserole.
Step 5: Pour and Set
Reserve about two tablespoons of the egg custard mixture for later use. Pour the remaining egg mixture evenly around and over the layered croissant sandwiches in the baking dish. Cover the casserole, letting it sit at room temperature for at least one hour, or refrigerate overnight. This soaking step allows the croissants to absorb the custard and flavors fully, ensuring every bite is tender and bursting with savory richness.
Step 6: Bake to Perfection
Preheat your oven to 375°F (190°C). Before baking, brush the croissant tops gently with the reserved egg mixture to promote a golden, glossy finish. Sprinkle everything bagel seasoning and any leftover shredded cheddar cheese over the entire casserole for added crunch and cheesiness. Bake uncovered for 40 to 45 minutes, until the custard is set, the top is a delightful golden brown, and the cheese is melted and bubbly. Let the casserole rest for a few minutes before slicing and serving.
How to Serve Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe
Garnishes
Fresh, vibrant garnishes can elevate this casserole from delicious to downright memorable. A sprinkle of extra chopped green onions or fresh chives brightens each slice with a refreshing pop of color and taste. Consider adding a dollop of sour cream or a drizzle of tangy hot sauce for those who crave an extra zing.
Side Dishes
This Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe pairs wonderfully with fresh fruit salad or a light green salad tossed with lemon vinaigrette to balance the richness. Crispy breakfast potatoes or simply roasted asparagus can also round out the meal beautifully without overpowering the casserole’s bold flavors.
Creative Ways to Present
For a brunch gathering, consider serving this casserole in rustic cast iron skillets right at the table, adding homey charm and keeping it warm longer. You can even assemble smaller individual portions in ramekins to offer personalized servings — perfect for impressing guests with creativity and thoughtfulness.
Make Ahead and Storage
Storing Leftovers
Wrap leftover casserole tightly with plastic wrap or store in an airtight container in the refrigerator. It stays fresh for up to 3 days, making it a convenient and delicious leftover option for busy mornings.
Freezing
If you want to prepare this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe well in advance, freezing is a great choice. Assemble the casserole but do not bake. Cover tightly with foil and freeze for up to 2 months. Thaw overnight in the fridge before baking as directed.
Reheating
Reheat individual slices in the microwave for about 1 to 2 minutes or warm the entire casserole in a 350°F oven, covered with foil, for 20 to 25 minutes until heated through. A quick sprinkle of extra cheese before reheating keeps things melty and fresh.
FAQs
Can I use fresh croissants instead of stale ones?
Fresh croissants can work, but stale croissants absorb the egg custard better without becoming overly soggy, giving you a more balanced texture.
Is there a substitute for the breakfast sausage?
Absolutely! You can use cooked bacon, ham, or even turkey sausage depending on your taste and dietary preferences.
Can this casserole be made dairy-free?
To make it dairy-free, swap cream cheese and cheddar with plant-based alternatives and use a non-dairy milk for the custard, but keep in mind the texture and flavor may change slightly.
How long should the casserole soak before baking?
At least one hour at room temperature is recommended to let the croissants fully absorb the custard, but soaking overnight in the fridge yields even better flavor and texture.
Can I prepare this dish for a large crowd?
Yes! This recipe can be doubled and baked in a larger dish or multiple pans, making it perfect for family gatherings or brunch parties.
Final Thoughts
Every time I make this Croissant Breakfast Casserole with Sausage, Cream Cheese, and Green Onions Recipe, it becomes an instant favorite around the table. It is one of those dishes that feels effortlessly special, like a homemade treat that nourishes both body and soul. Whether for a weekend brunch or a holiday morning, give this recipe a try and prepare to fall in love with breakfast all over again!
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 combines flaky croissants with savory breakfast sausage, creamy cheese, and a flavorful egg custard for a delicious and hearty morning meal. With layers of cream cheese, white cheddar, green onions, and a subtle kick from hot sauce and Dijon mustard, this make-ahead casserole is perfect for weekend brunches or holiday gatherings.
Ingredients
Croissants and Base
- 8 – 10 small/medium croissants, stale
- 1 tablespoon olive oil
- Kosher salt, about 1 teaspoon divided
- Freshly cracked pepper, about 1/2 teaspoon divided
Sausage and Vegetable Mixture
- 1 lb breakfast sausage
- 1/2 yellow onion, diced
- 1 red bell pepper, diced
Cheeses and Seasonings
- 4 oz cream cheese, room temperature
- 2 cups white cheddar, grated (1 1/2 cups for mixture, remainder for topping)
- 3 green onions, sliced
- 1/2 teaspoon paprika
- 2 tablespoons everything bagel seasoning
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)
Instructions
- Brown the meat and veggies: Heat 1 tablespoon olive oil in a skillet over medium heat. Add the sausage and cook, breaking it apart with a spoon, until mostly cooked through. Then add the diced yellow onion and red bell pepper, 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 creamy and well incorporated.
- Prep the croissants: Slice the croissants lengthwise in half. Lightly grease a 9×13 inch baking dish with nonstick spray or butter. Arrange the bottom halves evenly in the dish. Divide the sausage filling evenly over them, then place the top halves on 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 rest evenly around and over the croissant sandwiches. Cover and let soak at room temperature for at least 1 hour, or refrigerate overnight to allow croissants to absorb the custard.
- Preheat the oven: When ready, preheat oven to 375°F (190°C).
- Bake: Before baking, brush croissants lightly with reserved egg mixture. Sprinkle 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, and cheese is melted and bubbly. Let rest a few minutes before serving.
Notes
- Using stale croissants helps prevent sogginess and allows the bread to soak up the custard fully.
- The casserole can be prepared the night before and baked the next morning for convenience.
- Adjust hot sauce to your preferred spice level or omit for a milder casserole.
- If you prefer, substitute the breakfast sausage with turkey sausage for a leaner option.
- Letting the casserole rest after baking helps the custard to fully set and makes slicing easier.
