Name: Cheesy Breakfast Potato Casserole
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 1 lb mild Italian sausage; ½ white onion, chopped; ¼ cup green bell pepper, chopped; ¼ cup red bell pepper, chopped; 8 eggs, beaten; ¼ cup milk; 1 bag (20 oz) hash brown potatoes; 3 cups shredded sharp cheddar cheese, divided; Salt to taste; Black pepper to taste

Why You’ll Love Cheesy Breakfast Potato Casserole Recipe

This casserole is easy to prepare, filling, and loaded with classic breakfast flavors. The crispy hash browns pair perfectly with the creamy eggs and melted cheese, while the sausage adds a savory and satisfying bite. It is also great for feeding a crowd and can be made ahead of time.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

1 pound mild Italian sausage
½ white onion, chopped
¼ cup green bell pepper, chopped
¼ cup red bell pepper, chopped
8 eggs, beaten
¼ cup milk
1 bag frozen hash brown potatoes, 20 ounces
3 cups shredded sharp cheddar cheese, divided
Salt and pepper to taste

Directions

Preheat the oven to 350°F.

In a large skillet over medium heat, cook the Italian sausage and chopped onion until the sausage is fully browned and no pink remains. Drain excess grease if necessary.

In a large mixing bowl, combine the beaten eggs, milk, 2 cups of shredded cheddar cheese, chopped green and red bell peppers, and hash brown potatoes.

Add the cooked sausage mixture to the bowl and season with salt and pepper to taste. Stir everything together until well combined.

Pour the mixture into a greased 9 x 13-inch casserole dish and spread evenly.

Bake for 45 to 50 minutes, or until the eggs are fully set in the center.

Sprinkle the remaining 1 cup of shredded cheddar cheese over the top and return the casserole to the oven for another 10 minutes, or until the cheese is melted and bubbly.

Allow the casserole to rest for a few minutes before slicing and serving.

Servings and timing

This recipe makes 8 servings.

Prep time: 15 minutes
Cook time: 50 minutes
Total time: 1 hour 5 minutes

Variations

Swap the Italian sausage for breakfast sausage, turkey sausage, , or diced .

Use pepper jack cheese or mozzarella for a different cheese flavor.

Add mushrooms, spinach, or jalapeños for extra vegetables and flavor.

For a spicy version, use hot Italian sausage and add crushed red pepper flakes.

You can also use frozen diced potatoes instead of hash browns for a chunkier texture.

Storage/Reheating

Store leftover casserole in an airtight container in the refrigerator for up to 4 days.

To reheat, warm individual portions in the microwave for 1 to 2 minutes or until heated through.

For larger portions, cover with foil and reheat in a 350°F oven until warm.

This casserole can also be frozen for up to 2 months. Thaw overnight in the refrigerator before reheating.

FAQs

Can I make this casserole ahead of time?

Yes, you can assemble the casserole the night before, cover it, and refrigerate until ready to bake.

Can I use fresh potatoes instead of frozen hash browns?

Yes, shredded fresh potatoes work well. Be sure to squeeze out excess moisture before using.

What type of sausage works best?

Mild Italian sausage adds great flavor, but breakfast sausage or spicy sausage also work well.

How do I know when the casserole is done?

The center should be fully set and no longer jiggly when gently shaken.

Can I make this recipe vegetarian?

Yes, simply omit the sausage or replace it with a plant-based sausage alternative.

Can I use a different cheese?

Absolutely. Colby Jack, Monterey Jack, mozzarella, or Swiss cheese are all delicious options.

Why is my casserole watery?

Excess moisture from frozen potatoes or vegetables can cause this. Thaw and drain ingredients if needed.

Can I freeze the casserole after baking?

Yes, allow it to cool completely before freezing in airtight containers.

What should I serve with this casserole?

Fresh fruit, toast, muffins, or a simple green salad pair nicely with this dish.

Can I double the recipe?

Yes, you can double the ingredients and bake in two casserole dishes for larger gatherings.

Conclusion

Cheesy Breakfast Potato Casserole is a warm, satisfying dish that combines savory sausage, crispy potatoes, fluffy eggs, and gooey cheddar cheese into one easy meal. Whether served for brunch, holidays, or meal prep, this comforting casserole is always a crowd-pleaser.