Breakfast Casserole With Eggs And Cheese

Name: Breakfast Casserole With Eggs And Cheese
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Yield: 6 servings
Ingredients: 6 large eggs; 2 cups shredded cheese (cheddar, mozzarella, or a blend); 1 cup milk; 2 cups diced vegetables (bell peppers, onions, spinach, etc.); 1 cup cooked and crumbled sausage or bacon (optional); 1 teaspoon salt; 1/2 teaspoon black pepper; 1 teaspoon garlic powder; 1 teaspoon dried oregano; 1 tablespoon olive oil butter (for greasing the baking dish)

Highlighted under: Hearty Kitchen

I love starting my day with a hearty breakfast, and this Breakfast Casserole with Eggs and Cheese has become a staple in my kitchen. It’s the perfect way to use up leftover vegetables or meats, and it always impresses my family. The combination of fluffy eggs and gooey cheese baked to perfection makes every bite satisfying. Plus, it's an ideal dish for weekend brunches or gatherings, and I can prepare it in advance, so it’s ready when I am!

Created by

Maribel Hawthorne

Last updated on 2026-02-15T05:45:36.340Z

When I first decided to make a breakfast casserole, I was unsure how it would turn out. However, I quickly learned that the beauty of this dish lies in its versatility. I've tried varied ingredients from spinach to bacon, and they all blend beautifully in the layers of eggs and cheese. One tip I found invaluable is to let it rest for a few minutes before serving; this helps everything set and makes it easier to cut into servings.

Each time I make this casserole, it brings warmth and joy to our breakfast table. The aroma wafting through the kitchen while it bakes is simply irresistible! I love using a mix of cheeses to develop a depth of flavor and making sure to incorporate fresh herbs to elevate it. Trust me, your taste buds will thank you!

Why You'll Love This Recipe

Rich, cheesy goodness that everyone will adore
Versatile enough to use up leftovers
Perfect for meal prep or serving a crowd

Choosing the Right Ingredients

The beauty of this Breakfast Casserole lies in its adaptability. You can tailor the vegetable choices to whatever you have on hand. Bell peppers, onions, and spinach lend vibrant colors and nutritional value, while mushrooms or zucchini can add an earthy richness. Fresh vegetables should be diced into uniform pieces for even cooking, preventing any from being overdone while others remain crunchy.

When it comes to cheese, a blend of cheddar and mozzarella creates the perfect balance of flavor and meltiness. Cheddar brings a sharp tang, while mozzarella provides that gooey texture we love. If you want a little heat, consider adding pepper jack, or for a milder option, stick with a plain mozzarella or a mild cheddar for a creamier profile.

Mastering the Baking Process

The key to achieving that perfect casserole texture is proper baking time. Check for doneness at the 35-minute mark; the edges should be golden brown, and the center should feel firm to the touch. An overbaked casserole can become rubbery, so keep an eye on those final minutes. If you notice the top browning too quickly, cover it with foil and continue baking until set.

After baking, letting the casserole rest for 5-10 minutes is crucial. This step allows the casserole to set up, making it easier to slice without falling apart. I often find that cutting it too soon leads to a mess, so be patient! This resting phase enhances the flavors as they meld together and provides a more satisfying bite.

Ingredients

Ingredients for Breakfast Casserole

6 large eggs
2 cups shredded cheese (cheddar, mozzarella, or a blend)
1 cup milk
2 cups diced vegetables (bell peppers, onions, spinach, etc.)
1 cup cooked and crumbled sausage or bacon (optional)
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon garlic powder
1 teaspoon dried oregano
1 tablespoon olive oil butter (for greasing the baking dish)

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a large baking dish with olive oil or butter to prevent sticking.

Prepare the Egg Mixture

In a large bowl, whisk together the eggs, milk, salt, pepper, garlic powder, and oregano until well combined.

Layer Ingredients

In the greased baking dish, layer your chosen vegetables, meats, and half of the cheese. Pour the egg mixture over the layers, making sure it is evenly distributed. Top with the remaining cheese.

Bake the Casserole

Bake in the preheated oven for 40-45 minutes, or until the eggs are fully set and the top is golden brown.

Let It Rest

Remove the casserole from the oven and let it rest for 5-10 minutes before slicing. This will help it hold its shape better.

Serve and Enjoy

Slice into squares and serve warm. Enjoy your delicious breakfast casserole with a side of fresh fruit or toast!

Pro Tips

For added flavor, try incorporating fresh herbs or different types of cheese. You can also make it ahead of time and store it in the refrigerator
just reheat in the oven before serving.

Make-Ahead Tips

One of the greatest advantages of this casserole is that it can be prepared in advance. I often assemble it the night before and refrigerate. This allows the flavors to meld beautifully overnight, enhancing the dish's overall taste. Just be sure to cover it tightly with plastic wrap to prevent drying out.

When ready to bake, simply remove it from the fridge and let it sit at room temperature for about 30 minutes to take the chill off before placing it in the oven. This way, you achieve even cooking and prevent the edges from burning while the center cooks through.

Storage and Reheating

If you have leftovers, they can be stored in an airtight container in the refrigerator for up to 4 days. To reheat, simply place slices in the microwave on medium heat for about 30-45 seconds or until warmed through. Alternatively, for a slightly crispy top reviving that oven-baked texture, reheat covered in the oven at 350°F (175°C) for about 15 minutes.

If you want to extend the life of your casserole longer, it can also be frozen. Cut it into individual portions and wrap each slice tightly in plastic wrap, then place them in a freezer-safe bag. It will keep well for up to 3 months. When ready to enjoy, thaw overnight in the refrigerator and reheat as mentioned above.

Questions About Recipes

→ Can I make this casserole ahead of time?

Yes! You can prepare it the night before and store it in the refrigerator. Just bake it in the morning.

→ What other ingredients can I add?

Feel free to customize with your favorite vegetables, meats, or cheeses based on your preferences!

→ How do I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or oven.

→ Can I freeze this casserole?

Absolutely! After baking and cooling completely, wrap it tightly and freeze for up to 2 months. Thaw overnight in the fridge before reheating.