Breakfast Casserole Recipe
If you love a hearty start to the day, this Breakfast Casserole Recipe is bound to become your new morning ritual. Perfect for family gatherings, meal preps, or any lazy weekend, it brings together creamy eggs, melty cheese, flavorful sausage, and veggies in a cozy, golden bake. Whether you’re looking to elevate brunch or simply want something satisfying to serve alongside your morning coffee, this casserole wins on all fronts—it’s customizable, make-ahead friendly, and utterly delicious.

Ingredients You’ll Need
The beauty of this dish lies in its simple, everyday ingredients, each playing an unmistakable role in building layers of flavor and texture. Here’s what you’ll need and why it matters:
- Breakfast sausage (or bacon): Provides the savory, meaty backbone and fantastic seasoning.
- Eggs: The base that holds it all together, delivering protein and a gorgeously fluffy texture.
- Milk: Softens the casserole base and ensures a rich, creamy bite.
- Shredded cheddar cheese: Brings a sharp, tangy flavor and beautiful melt.
- Shredded mozzarella cheese: Adds luscious stretch and mild creaminess.
- Bell pepper: Offers pops of sweetness, color, and crunch.
- Onion: Lends aromatic depth and savory notes that sing in every bite.
- Frozen hash browns (thawed): The hearty, starchy base that helps the casserole hold its shape.
- Salt: Essential to round out and enhance all the flavors.
- Black pepper: Adds just the right amount of gentle heat.
- Garlic powder: Gives a subtle, savory backbone without overpowering.
- Paprika: For a hint of smokiness and that beautiful golden color.
- Cooking spray or butter: Prevents sticking and helps the edges crisp up nicely.
How to Make Breakfast Casserole Recipe
Step 1: Prep Your Pan and Oven
Start by preheating your oven to 350°F to ensure even cooking from the get-go. Give your 9×13-inch baking dish a generous coating with cooking spray or a swipe of butter—this ensures none of that delicious golden edge gets left behind.
Step 2: Cook the Sausage
In a large skillet set over medium heat, cook the breakfast sausage (or bacon if you’re swapping it in) until it’s thoroughly browned and crumbly. This step will build the savory foundation of your Breakfast Casserole Recipe. Drain any excess fat so your casserole stays fluffy rather than greasy.
Step 3: Whisk Together the Egg Mixture
Grab a big mixing bowl and whisk together the eggs, milk, salt, black pepper, garlic powder, and paprika. Whisk until everything is well combined and slightly frothy—this will give the casserole its signature lightness.
Step 4: Add the Good Stuff
Now for the fun part! Stir in your thawed hash browns, the cooked sausage or bacon, diced bell pepper, onion, cheddar cheese, and mozzarella cheese. This step brings all your ingredients into harmonious union, ensuring every bite has the perfect blend of flavors.
Step 5: Assemble and Bake
Pour the entire mixture into your prepared baking dish and spread it out evenly for a uniform bake. Slide it into the oven and let it bubble away for 45 to 50 minutes, or until the top is golden and the center is set. The scent at this stage is completely irresistible!
Step 6: Rest and Serve
Remove the casserole from the oven and let it rest for 5 to 10 minutes. This short pause allows it to firm up just enough to slice beautifully—plus, it gives you a moment to gather everyone to the table!
How to Serve Breakfast Casserole Recipe

Garnishes
For a finishing touch, scatter chopped fresh herbs such as chives, parsley, or green onions right before serving. A dollop of sour cream or some hot sauce can dress up individual portions with extra creaminess or zip.
Side Dishes
This casserole pairs effortlessly with a fresh fruit salad, crusty bread, or a simple green salad. Serve with freshly brewed coffee or a sparkling brunch cocktail for the ultimate morning spread.
Creative Ways to Present
Cut the Breakfast Casserole Recipe into squares and stack them high for dramatic effect, or use a round biscuit cutter for café-style circles. Try baking it in individual ramekins for a personalized touch that feels extra special.
Make Ahead and Storage
Storing Leftovers
Once cooled, store any leftover casserole tightly covered or in an airtight container in the refrigerator. It keeps wonderfully for up to four days—perfect for sneaky weekday breakfasts!
Freezing
This Breakfast Casserole Recipe is a lifesaver when made ahead and frozen. Slice into portions, wrap each tightly in foil or plastic, and freeze for up to two months. Thaw overnight in the fridge when you’re ready to enjoy again.
Reheating
For best results, reheat slices in the oven at 350°F until warmed through. If you’re in a hurry, the microwave works too; just add a splash of milk to keep things moist and cover the dish so it doesn’t dry out.
FAQs
Can I make the Breakfast Casserole Recipe the night before?
Absolutely! Assemble everything the night before, cover tightly, and refrigerate. In the morning, pop it into the oven—just add a couple extra minutes to the bake time since it’s starting cold.
What can I substitute for breakfast sausage?
Bacon is a delicious option, or you can go meatless with sautéed mushrooms and spinach. Turkey sausage or ham are also tasty alternatives in this Breakfast Casserole Recipe.
Can I use fresh potatoes instead of frozen hash browns?
Yes! Just shred your potatoes and blot them dry thoroughly with a towel to remove excess moisture, which keeps your casserole from getting soggy.
How do I know when the casserole is done baking?
The top should be evenly golden and slightly puffed, and a knife inserted in the center will come out clean. If you’re not sure, a gentle jiggle should reveal a firm—not wobbly—center.
Is this Breakfast Casserole Recipe gluten-free?
It is! Just double-check your sausage and hash browns labels to make sure there are no sneaky hidden ingredients, and you’re good to go.
Final Thoughts
There’s a reason this Breakfast Casserole Recipe has a permanent place at my table—it’s comforting, versatile, and downright delicious. Give it a try for your next brunch or busy weekday, and I guarantee you’ll have everyone asking for seconds!
Print
Breakfast Casserole Recipe
- Total Time: 1 hour 5 minutes
- Yield: 8 servings 1x
- Diet: Non-Vegetarian
Description
This Breakfast Casserole Recipe is a hearty and delicious way to start your day. Packed with savory flavors, eggs, cheese, and hash browns, this casserole is perfect for a family breakfast or brunch.
Ingredients
Main Ingredients:
- 1 pound breakfast sausage (or bacon, cooked and crumbled)
- 6 large eggs
- 2 cups milk
Additional Ingredients:
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella cheese
- 1 bell pepper (diced)
- 1 small onion (diced)
- 3 cups frozen hash browns (thawed)
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon garlic powder
- ½ teaspoon paprika
- cooking spray or butter (for greasing)
Instructions
- Preheat and Prepare: Preheat the oven to 350°F and grease a 9×13-inch baking dish.
- Cook Sausage: In a large skillet, cook the breakfast sausage until browned and fully cooked. Drain any excess fat and set aside.
- Mix Ingredients: In a large bowl, whisk together eggs, milk, salt, pepper, garlic powder, and paprika. Add hash browns, sausage, bell pepper, onion, cheddar, and mozzarella. Mix well.
- Bake: Pour the mixture into the prepared dish and bake for 45–50 minutes until set.
- Rest and Serve: Let it rest for 5–10 minutes before slicing and serving.
Notes
- You can prepare this casserole the night before and bake it in the morning.
- Add chopped spinach or mushrooms for extra veggies.
- Use your favorite cheese blend for added flavor.
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 square
- Calories: 360
- Sugar: 3g
- Sodium: 640mg
- Fat: 24g
- Saturated Fat: 10g
- Unsaturated Fat: 11g
- Trans Fat: 0g
- Carbohydrates: 14g
- Fiber: 1g
- Protein: 20g
- Cholesterol: 190mg