Breakfast Casserole is my favorite go-to dish when I need something warm, hearty, and easy to make for breakfast or brunch. It’s loaded with fluffy eggs, gooey cheese, savory sausage, and either bread or potatoes—all baked together in one cozy casserole. It’s the kind of dish I make again and again, whether I’m feeding a crowd or prepping for the week ahead.

Why You’ll Love This Recipe

I love this casserole because it’s simple to throw together and incredibly versatile. It works for holiday mornings, casual weekend brunches, or quick weekday breakfasts. I can mix in my favorite vegetables, switch up the type of cheese, or use whatever I have on hand. It’s warm, comforting, and always satisfying.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

Eggs
Milk or half-and-half
Breakfast sausage, cooked and crumbled
Bread cubes, shredded hash browns, or tater tots
Shredded cheese (cheddar, mozzarella, or a blend)
Onion, diced (optional)
Bell peppers, diced (optional)
Garlic powder or Italian seasoning (optional)
Salt and black pepper
Fresh parsley or chives (for garnish, optional)

Directions

I preheat the oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
I layer the bread cubes or potatoes in the dish, then top with cooked sausage and vegetables.
In a large bowl, I whisk together the eggs, milk, salt, pepper, and any additional seasonings.
I pour the egg mixture over the casserole and sprinkle cheese evenly on top.
I bake for 40–50 minutes, or until the center is set and the top is golden and bubbly.
I let it rest for about 10 minutes before slicing and serving.

Servings and timing

This recipe makes 8 to 10 servings and takes about 1 hour total, including prep and baking time. It’s perfect for mornings when I need something hearty and easy to share.

Variations

I use cooked spinach, mushrooms, or zucchini to add more vegetables.
I swap in cooked ground turkey or chicken for a lighter option.
I stir in green chiles or hot sauce for extra spice.
I top it with extra cheese or herbs before serving for added flavor.
I bake it in muffin tins for single-serve portions.

storage/reheating

I store leftovers in the fridge for up to 4 days in an airtight container. It reheats well in the microwave or oven. I also freeze individual slices, wrapped well, for up to 2 months—great for quick, make-ahead breakfasts.

FAQs

Can I make this casserole the night before?

Yes, I often assemble it fully, cover it, and refrigerate overnight. I bake it in the morning, adding a few extra minutes to the cook time if needed.

What type of bread works best?

I like using slightly stale or crusty bread like French bread or sourdough. Sandwich bread works too—whatever I have on hand.

Can I use potatoes instead of bread?

Absolutely. I’ve made it with shredded hash browns or tater tots, and both work perfectly.

How do I know when it’s done?

I check that the center is no longer jiggly and a knife inserted in the middle comes out clean. It usually takes around 45–50 minutes.

Can I freeze it?

Yes, I freeze fully baked and cooled slices in airtight containers. I reheat them in the microwave or oven until warmed through.

Conclusion

Breakfast Casserole is a cozy, flavorful way to start the day, whether I’m serving it hot out of the oven or pulling leftovers from the fridge. It’s hearty, customizable, and perfect for feeding a group or keeping breakfast simple for the week. This is one dish that never goes out of style in my kitchen.

Breakfast Casserole

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Breakfast Casserole is a hearty, make-ahead breakfast dish featuring eggs, cheese, sausage, and either bread or potatoes—all baked into a warm, comforting casserole. Perfect for brunch, holidays, or weekly meal prep.

Author: Mayaa
Prep Time: 15 minutes
Cook Time: 45 minutes
Total Time: 1 hour
Yield: 8 to 10 servings
Category: Breakfast
Method: Baking
Cuisine: American

Ingredients

10 large eggs
2 cups milk or half-and-half
1 lb breakfast sausage, cooked and crumbled
4 cups bread cubes, shredded hash browns, or tater tots
2 cups shredded cheese (cheddar, mozzarella, or blend)
1/2 cup diced onion (optional)
1/2 cup diced bell peppers (optional)
1/2 tsp garlic powder or Italian seasoning (optional)
Salt and black pepper to taste
Chopped parsley or chives for garnish (optional)

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Instructions

Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
Layer bread or potatoes in the dish. Add sausage and vegetables over top.
In a large bowl, whisk together eggs, milk, salt, pepper, and seasonings.
Pour the egg mixture evenly over the casserole and top with shredded cheese.
Bake uncovered for 40–50 minutes, or until the center is set and the top is golden.
Let rest for 10 minutes before slicing. Garnish with fresh herbs if desired.