This easy Breakfast Casserole is the ultimate morning comfort food, perfect for everything from busy weekdays to festive holiday brunches. It’s a savory, satisfying dish packed with fluffy eggs, savory sausage, hearty bread, and gooey melted cheese, all baked into one delicious, make-ahead meal. Forget stressful mornings; this recipe is your secret to a relaxed and delicious start to the day.
We designed this recipe to be incredibly simple and endlessly customizable. It’s the perfect solution for feeding a crowd, and the best part is you can do all the prep work the night before. Just pop it in the oven in the morning for a hot, homemade breakfast that tastes like you spent hours in the kitchen.
Why This is The Ultimate Breakfast Casserole Recipe
In a world of complicated breakfast options, this recipe stands out for its simplicity and incredible flavor. It’s a true one-pan wonder that minimizes cleanup and maximizes taste.
- Make-Ahead Friendly: Assemble it the night before and let the flavors meld in the fridge. Morning you will be so grateful!
- Perfect for a Crowd: Easily doubles or triples to serve a large family or guests for a holiday brunch.
- Completely Customizable: Swap out the sausage for bacon, add your favorite veggies, or try different cheeses. The possibilities are endless!
- Simple, Accessible Ingredients: You likely have most, if not all, of the ingredients in your kitchen right now.
Key Ingredients You’ll Need
The magic of this casserole comes from simple, high-quality ingredients coming together perfectly. Here’s what you’ll need to create this masterpiece.
The Best Bread to Use
Stale, dry bread is the secret to a breakfast casserole that isn’t soggy. We recommend using a sturdy bread like French bread, sourdough, or brioche, cut into 1-inch cubes and left out for a few hours (or overnight) to dry out. This helps it soak up the egg mixture without turning to mush.
Choosing Your Protein
We love the classic flavor of a savory pork breakfast sausage. However, you can easily substitute it with cooked and crumbled bacon, diced ham, or even Italian sausage. For a lighter option, turkey sausage works wonderfully too.
The Perfect Cheese Blend
A combination of sharp cheddar and Monterey Jack gives you the best of both worlds: sharp, tangy flavor and that irresistible cheese pull. Don’t be afraid to experiment with other cheeses like Gruyère, Swiss, or pepper jack for a spicy kick.
How to Make The Perfect Breakfast Casserole
Making this crowd-pleasing Breakfast Casserole is as simple as layering your ingredients and letting the oven do the work. Follow these steps for guaranteed success.
Step 1: Prepare the Base
First, grease a 9×13-inch baking dish. Spread your dried bread cubes in an even layer across the bottom. This foundational layer will soak up all the delicious custard.
Step 2: Cook the Sausage
In a large skillet, cook the breakfast sausage over medium-high heat until it’s nicely browned and crumbled. Drain off any excess grease and sprinkle the cooked sausage evenly over the bread cubes.
Step 3: Whisk the Eggs
In a large bowl, whisk together the eggs, milk, heavy cream, Dijon mustard, salt, pepper, and onion powder. Keep whisking until the mixture is smooth and pale yellow. This custard is the heart of the casserole.
Step 4: Assemble and Chill (The Overnight Secret!)
Sprinkle half of the shredded cheese over the sausage and bread. Pour the egg mixture evenly over the top. Use a spatula to gently press down on the bread, ensuring it’s all submerged. Top with the remaining cheese. Cover the dish tightly with plastic wrap and refrigerate for at least 4 hours, or preferably overnight. This chilling time is crucial for the bread to absorb the custard.
Step 5: Bake to Perfection
When you’re ready to bake, preheat your oven to 350°F (175°C). Remove the casserole from the refrigerator and let it sit at room temperature for about 20-30 minutes. Bake, uncovered, for 45-55 minutes, or until the center is set (a knife inserted into the middle comes out clean) and the top is golden brown and bubbly.
Pro Tips for a Foolproof Casserole
Want to guarantee a perfect result every single time? These tips from our kitchen will help you master this recipe.
- Don’t Use Fresh Bread: Using dry, stale bread is the most important tip to avoid a soggy casserole.
- Let It Rest: After baking, let the casserole rest for at least 10 minutes before slicing. This helps it set up properly and makes for cleaner slices.
- Room Temperature First: Letting the dish sit on the counter for 20-30 minutes before baking helps it cook more evenly.
Fun Variations to Try
While the classic version is fantastic, this recipe is a blank canvas for your culinary creativity. For a different take, check out this amazing Pancake Sausage Casserole.
- Vegetarian Delight: Omit the sausage and load it up with sautéed vegetables like mushrooms, spinach, bell peppers, and onions.
- Spicy Southwest: Use chorizo instead of sausage, add a can of diced green chiles, and use a pepper jack cheese blend. Serve with salsa and sour cream.
- Denver Omelet Style: Add diced ham, chopped bell peppers, and onions for a classic flavor combination. Looking for another classic breakfast? Try our Sweet Potato Hash.
You can even prepare some Easy Homemade Biscuits on the side for a truly complete breakfast feast.
Make-Ahead and Freezing Instructions
This Breakfast Casserole is a meal prepper’s dream. Here’s how to prepare it in advance.
Making it Ahead
The best way to make this casserole is to assemble it the night before. Prepare the entire dish up to the point of baking, cover it tightly, and refrigerate for up to 24 hours. The next morning, just bake as directed.
Freezing Instructions
You can freeze the casserole either baked or unbaked. For an unbaked casserole, assemble completely, then wrap tightly in both plastic wrap and foil. It can be frozen for up to 2 months. Thaw overnight in the refrigerator before baking. To freeze a baked casserole, let it cool completely, then wrap individual slices or the whole dish tightly. Reheat in the oven or microwave.
What to Serve with Your Casserole
This casserole is a hearty meal on its own, but it also pairs beautifully with a variety of side dishes. Consider serving it with a fresh fruit salad, crispy hash browns, or a simple green salad with a vinaigrette for a lovely brunch.
Frequently Asked Questions
Absolutely! This recipe is perfect for making ahead. You can assemble the entire casserole, cover it tightly, and refrigerate it for up to 24 hours before baking. This not only saves time but also allows the flavors to meld together.
Of course! To make it vegetarian, simply omit the sausage and load it up with your favorite vegetables. Sautéed mushrooms, spinach, bell peppers, and onions are all fantastic additions. You can add about 2 cups of cooked vegetables.
Yes, you can freeze it baked or unbaked. For best results, assemble the casserole in a freezer-safe dish, wrap it tightly in plastic wrap and aluminum foil, and freeze for up to 2 months. Thaw it in the refrigerator overnight before baking as directed.
The key is to use dry, stale bread. The dry bread acts like a sponge, soaking up the egg mixture without turning mushy. If your bread is fresh, you can cube it and toast it lightly in the oven to dry it out before assembling.
A sturdy, hearty bread is best. We recommend using French bread, sourdough, brioche, or challah. Avoid standard sandwich bread, as it’s too soft and can become soggy easily.
More Breakfast Recipes You’ll Love
Breakfast Casserole (Easy & Crowd-Pleasing)
Equipment
- 1 9x13 inch baking dish
- 1 Large skillet
- 1 Large mixing bowl
Ingredients
Main Casserole
- 1 pound pork breakfast sausage
- 10 large eggs
- 2 cups whole milk
- 1 cup heavy cream
- 8 cups stale bread, cubed French bread or sourdough works best
- 2 cups shredded sharp cheddar cheese
- 1 cup shredded Monterey Jack cheese
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 teaspoon onion powder
- 1 tablespoon Dijon mustard
Instructions
- Grease a 9x13-inch baking dish. Spread the cubed stale bread in an even layer across the bottom.
- In a large skillet, cook the breakfast sausage over medium-high heat until browned and crumbled. Drain excess grease. Sprinkle the sausage over the bread cubes.
- Sprinkle half of the shredded cheeses (1.5 cups) over the sausage and bread layer.
- In a large bowl, whisk together the eggs, milk, heavy cream, Dijon mustard, salt, pepper, and onion powder until fully combined.
- Pour the egg mixture evenly over the bread, sausage, and cheese. Gently press down to ensure the bread is saturated. Top with the remaining cheese. Cover tightly and refrigerate for at least 4 hours, or overnight.
- Preheat oven to 350°F (175°C). Remove the casserole from the fridge and let it sit at room temperature for 20-30 minutes. Bake uncovered for 45-55 minutes, until the center is set and the top is golden brown.
- Let the casserole rest for 10 minutes before slicing and serving.
Notes
Tip 2: Don't skip the chilling time! This allows the bread to fully absorb the egg custard, which is key to the texture.
Tip 3: Feel free to customize with your favorite vegetables. Add up to 1.5 cups of sautéed mushrooms, onions, or bell peppers along with the sausage.
Share Your Creations!
We hope you love this easy Breakfast Casserole recipe as much as we do! If you try it, be sure to leave a comment below and let us know how it turned out. Don’t forget to save this recipe to your favorite board on Pinterest!
