Egg Casserole is the perfect way to start your day with a hearty, delicious breakfast. Packed with fresh veggies, sour cream, and plenty of cheddar cheese, it’s easy to make and satisfies everyone. Whether you’re feeding a crowd on a weekend or just want something simple and tasty for a busy morning, this casserole has you covered. Plus, it’s quick to prep and bakes up beautifully, making it a stress-free addition to your breakfast lineup.

Baked egg casserole in a blue-edged rectangular dish, featuring browned cheese, visible broccoli, and tomato pieces on a light countertop with a sprig of thyme nearby. — Cheesy Egg Casserole. Photo Credit: Hungry Cooks Kitchen

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This is one of those dishes that is a real crowd-pleaser; even picky eaters will gobble it up! It’s also great for me, as I always prep it the night before, so all I have to do the next morning is turn the oven on and pop it in—job done! It’s a regular holiday casserole, and I’m always asked to make it at family gatherings. It’s packed with protein and is perfect to set you up for the day.

Ingredients You’ll Need

You’ll need all the ingredients in the photograph below.

A top view of labeled bowls containing broccoli, bell pepper, onions, green onions, cheese, milk, sour cream, salt, pepper, and a carton of eggs—perfect ingredients for a savory twist on a Cinnamon French toast casserole. — Cheesy Egg Casserole Ingredients. Photo Credit: Hungry Cooks Kitchen

How to Make Egg Casserole with Step-by-Step Instructions

Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.

You’re going to love how easy it is to prepare this delicious casserole, just follow my guide and you’ll be cooking it perfectly!

Preheat your oven to 180ºC (350ºF). Spray a baking tray with cooking oil to ensure nothing sticks.

Mix the Egg Base

In a large bowl, combine the eggs, sour cream, milk, 1½ cups of shredded cheddar cheese, salt, and pepper. Whisk everything together until well mixed. This creates a rich and creamy base for your casserole.

Cook the Vegetables

Heat a large skillet over medium heat and add the olive oil. Toss in the green onions, bell peppers, and red onion. Cook for 5-7 minutes until they start to soften.

Add the broccoli florets and cook for another couple of minutes. Cooking the vegetables beforehand helps bring out their flavors and ensures they’re tender in the casserole.

Mixing Veggies and Egg Mixture

Once your veggies are beautifully sautéed, transfer them to the bowl with your egg mixture. Give everything a good stir so that the veggies are evenly distributed throughout.

Assemble the Casserole

Place the cooked vegetables in an even layer in the prepared baking dish. Pour the egg mixture over the vegetables, making sure everything is well covered. Scatter the remaining ½ cup of shredded cheddar cheese on top.

A rectangular baking dish filled with a colorful vegetable quiche mixture, including broccoli florets, red bell peppers, and onions. Eggshells are seen in the background on the left side of the image. — Place the vegetables evenly into the dish, then pour the egg mixture over them. Sprinkle shredded cheese evenly over the top. Bake until golden brown.

Bake and Serve

Bake in the preheated oven for 35-40 minutes or until the casserole is golden brown and set.

Allow the casserole to rest for a few minutes after baking to let it firm up, making it easier to slice and serve. Enjoy your delicious, veggie-packed egg casserole!

Tip: For an extra burst of flavor, you can add a dash of hot sauce or sprinkle some fresh herbs like parsley or chives on top before serving.

A baked casserole dish filled with a golden-brown cheesy vegetable bake, featuring visible broccoli and red bell peppers, set on a cloth napkin on a countertop.

Cheesy Egg Casserole Recipe

Egg Casserole is a hearty, delicious breakfast that's packed with fresh veggies, sour cream, and plenty of cheddar cheese. It’s easy to make and perfect for feeding a crowd or simplifying your busy mornings. Quick to prep and bake, it’s a no-stress addition to your breakfast routine. Even picky eaters will love it, and it's always a hit at family gatherings and holiday mornings.

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Prep Time: 10

Cook Time: 49

Total Time: 59

Course: Breakfast

Cuisine: American

Keyword: egg casserole

Servings:

Calories: 358kcal

Author: Mandy Applegate | Hungry Cooks Kitchen

Equipment

9×13 Baking Dish

Ingredients

8 eggs
1 cup sour cream
¼ cup milk
2 cups shredded cheddar cheese divided
salt and pepper
1 tablespoon olive oil
4 green onions sliced
½ green bell pepper diced
½ red bell pepper diced
½ cup red onion diced
1 cup broccoli florets

US Customary – Metric

Instructions

Preheat the oven to 180ºC. Spray a baking tray with cooking oil.
Combine the eggs, sour cream, milk, 1½ cups of cheese, and salt and pepper in a large bowl.
8 eggs, 1 cup sour cream, ¼ cup milk, 2 cups shredded cheddar cheese, salt and pepper
Heat a large skillet to medium and add the olive oil. Add the green onions, peppers and red onion and cook for 5-7 minutes. Add the broccoli florets and cook for a couple more minutes.
1 tablespoon olive oil, 4 green onions, ½ green bell pepper, ½ red bell pepper, ½ cup red onion, 1 cup broccoli florets
Place the vegetables in an even layer in the baking dish and then pour the egg mixture over them. Scatter the remaining cheese and bake for 35-40 minutes or until golden brown. Remove from the oven and let the casserole rest for a few minutes, then serve and enjoy.

Notes

Veggie Prep: Make sure to dice your vegetables evenly so they cook uniformly. Sautéing them beforehand brings out their natural flavors and ensures they’re nice and tender in the casserole.
Cheese Choices: While cheddar is always a winner, feel free to mix it up with cheeses like Monterey Jack, Swiss, or even a bit of feta for a fun twist.
Sour Cream Swap: No sour cream? No problem. Greek yogurt works just as well and adds a nice tang.
Add Some Spice: Adjust the salt and pepper to your liking. For a little extra kick, throw in a dash of hot sauce or a pinch of paprika.
Perfect Baking: Start checking your casserole at the 35-minute mark. It should be golden brown on top and set in the middle. If it’s still a bit wobbly, give it a few more minutes.
Make-Ahead Magic: You can assemble this casserole the night before and bake it in the morning. It’s a lifesaver for busy mornings or when you’re hosting brunch.
Serving Ideas: This egg casserole pairs perfectly with fresh fruit, a simple green salad, or some toast. It’s great for breakfast, brunch, or even a light dinner.
Leftover Love: Store any leftovers in an airtight container in the fridge for up to 3 days. Just reheat individual portions in the microwave or oven for a quick and tasty meal.

Nutrition

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Recipe Notes and Expert Tips

Veggie Prep: Make sure to dice your vegetables evenly so they cook uniformly. Sautéing them beforehand brings out their natural flavors and ensures they’re nice and tender in the casserole.
Cheese Choices: While cheddar is always a winner, feel free to mix it up with cheeses like Monterey Jack, Swiss, or even a bit of feta for a fun twist.
Sour Cream Swap: No sour cream? No problem. Greek yogurt works just as well and adds a nice tang.
Add Some Spice: Adjust the salt and pepper to your liking. For a little extra kick, throw in a dash of hot sauce or a pinch of paprika.
Perfect Baking: Start checking your casserole at the 35-minute mark. It should be golden brown on top and set in the middle. If it’s still a bit wobbly, give it a few more minutes.
Make-Ahead Magic: You can assemble this casserole the night before and bake it in the morning. It’s a lifesaver for busy mornings or when you’re hosting brunch.
Serving Ideas: This egg casserole pairs perfectly with fresh fruit, a simple green salad, or some toast. It’s great for breakfast, brunch, or even a light dinner.
Leftover Love: Store any leftovers in an airtight container in the fridge for up to 3 days. Just reheat individual portions in the microwave or oven for a quick and tasty meal.

How to Store Leftover Egg Casserole

Got leftovers? Store your egg casserole in an airtight container in the refrigerator, and it will stay fresh for up to 3 days. For a quick meal later, simply reheat individual portions in the microwave or oven.

And yes, you can freeze it! Cut the casserole into individual servings, wrap them tightly in plastic wrap, and place them in a freezer-safe bag. They’ll keep well in the freezer for up to 2 months. When you’re ready to eat, thaw overnight in the fridge and reheat in the oven. This way, you can enjoy a delicious, homemade breakfast anytime.

More Breakfast Casseroles and Recipes For You To Try

If you love breakfast as much as I do, then take a look at these easy recipes!

Hash Brown Casserole
French Toast Casserole
Breakfast Casserole
Egg Bites
Hash Browns

About the Author

A woman with long brown hair is smiling and standing with her arms crossed. She is wearing a sleeveless, black and white diamond-patterned dress.

Hey there! I’m Mandy

Mandy Applegate is a home cook, food blogger, and writer who believes the best meals are the ones shared with the people you love.

She’s all about easy recipes that taste amazing, the kind that make ordinary days feel a little more special and remind you why cooking at home matters.

She has been published on NBC, the Daily News, the Boston Herald, and the Chicago Sun-Times, amongst many others.

Cheesy Egg Casserole Recipe

Ingredients You’ll Need