Spring Brunch Egg Casserole With Spinach

Name: Spring Brunch Egg Casserole With Spinach
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Yield: 8 servings
Ingredients: 8 large eggs; 2 cups fresh spinach, chopped; 1 cup milk; 1 cup shredded cheese (cheddar and mozzarella mix); 1 cup diced tomatoes; 1/2 cup chopped onion; 1/2 teaspoon garlic powder; 1/4 teaspoon nutmeg; Salt and pepper to taste; 1 tablespoon olive oil

Highlighted under: Everyday Comfort Food Ideas

I absolutely love making this Spring Brunch Egg Casserole With Spinach for gatherings and family breakfasts. The vibrant colors of spinach and eggs mixed with creamy cheese create a dish that's not only delicious but visually appealing as well. It's incredibly easy to whip up, and the delightful aroma that fills the kitchen while it bakes is simply irresistible. This casserole has quickly become a favorite in my household, and I'm excited to share how simple it is to prepare with fresh ingredients that really shine during springtime!

Created by

Emma Parker

Last updated on 2026-02-23T21:53:35.961Z

During a recent brunch with friends, I decided to experiment with my usual egg casserole recipe by adding fresh spinach and herbs. The result was a beautiful, fluffy casserole that everyone adored! I found that using freshly sautéed spinach enhances the flavor significantly compared to using raw spinach, which can release excess water during baking.

Incorporating a blend of cheeses added a luxurious creaminess, while a touch of nutmeg surprisingly elevated the dish. Sharing this delicious centerpiece not only brought smiles but created memorable moments around the table, proving how food can truly unite us.

Why You'll Love This Recipe
Rich, savory flavor with vibrant greens
Easy to prepare ahead of time
Perfect for feeding a crowd on special occasions

The Role of Fresh Ingredients

Using fresh spinach in this casserole not only enhances its flavor but also adds a vibrant green color that makes the dish visually appealing. Fresh spinach contains more nutrients, offering a rich source of vitamins A and C, as well as iron. If you have access to farmers' markets, consider selecting local spinach, as it's typically picked at peak freshness, resulting in superior taste. If fresh spinach isn't available, you can substitute frozen spinach—just be sure to thaw and drain it thoroughly to avoid excess moisture.

The cheese blend in this recipe is crucial for achieving a creamy texture and rich flavor. A mixture of sharp cheddar and mozzarella provides the best of both worlds: cheddar adds a delightful tang, while mozzarella contributes a stretchiness that enhances the casserole’s mouthfeel. If you prefer a lighter option, consider using a lower-fat cheese or a dairy-free alternative, which can also work well without compromising too much on flavor.

Make-Ahead Tips and Storage

This casserole is an excellent make-ahead dish. You can prepare it the night before by following all of the steps up to the baking stage. Simply cover the assembled dish and refrigerate it. In the morning, take it out of the fridge and let it sit at room temperature for about 15 minutes before baking—it helps to ensure even cooking. Expect to extend the baking time slightly, perhaps an additional 5-10 minutes, since it will begin from a colder state.

Leftover casserole can be stored in an airtight container in the refrigerator for up to 4 days. To reheat, cut portions and place them on a microwave-safe plate, covering them with a damp paper towel to retain moisture. Microwave on medium power for about 1-2 minutes or until heated through. Alternatively, you can reheat it in the oven at 350°F (175°C) for 15-20 minutes, just until warmed and the edges are golden again.

Variations and Customizations

While this Spring Brunch Egg Casserole pairs beautifully with spinach and tomatoes, you can easily customize it to fit your taste. Consider adding cooked, crumbled bacon or sausage for a meaty kick, or toss in other vegetables like bell peppers, mushrooms, or zucchini for added flavor and nutrition. Just make sure any additional veggies are pre-cooked to prevent excess moisture and ensure they are well-integrated into the dish.

For a different twist, try incorporating herbs or spices to elevate the flavors. Fresh herbs like basil or parsley can be added during the assembly for a burst of freshness. Alternatively, a pinch of crushed red pepper flakes can introduce a pleasant heat. Experiment with different cheese combinations—feta or goat cheese also work great, lending a tangy richness that contrasts nicely with the eggs and spinach.

Ingredients

For the Casserole

8 large eggs
2 cups fresh spinach, chopped
1 cup milk
1 cup shredded cheese (cheddar and mozzarella mix)
1 cup diced tomatoes
1/2 cup chopped onion
1/2 teaspoon garlic powder
1/4 teaspoon nutmeg
Salt and pepper to taste
1 tablespoon olive oil

Feel free to customize with your favorite vegetables or cheese!

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish with butter or non-stick spray.

Sauté the Spinach

In a skillet over medium heat, add olive oil and diced onions. Sauté until the onions are soft, then add the chopped spinach and cook until wilted. Remove from heat and set aside.

Whisk the Eggs

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

Combine and Bake

In the greased baking dish, layer the sautéed spinach, diced tomatoes, and cheese. Pour the egg mixture over the top to cover evenly. Bake for 35-40 minutes, or until the center is set and the top is golden brown.

Serve and Enjoy

Let the casserole cool for a few minutes before slicing. Serve warm and enjoy your delightful spring brunch!

This dish can also be made a day in advance and simply baked before serving!

Pro Tips

For added flavor, try adding cooked sausage or bacon to the mixture. This casserole can easily be customized according to your guests' tastes.

Cooking Techniques for Success

Sautéing the spinach until just wilted not only enhances its flavor but also helps reduce its volume, preventing a watery casserole. Use a large skillet to ensure the spinach cooks evenly, and don't rush this step—medium heat is ideal for releasing the moisture without overcooking the spinach. Keep an eye on the onions as well; they should become translucent rather than browned, which takes about 5-7 minutes.

When whisking the eggs, be thorough to achieve a uniform mixture that ensures even cooking and texture. Aim for a pale, frothy consistency, which indicates that you're incorporating the air necessary for fluffiness. A balloon whisk is particularly effective, but any whisk will do—just be sure not to skip this step for a light, airy casserole.

Serving Suggestions

To serve this casserole, consider pairing it with a light salad or fresh fruit for a complete brunch experience. A citrus-based dressing can complement the dish while adding a refreshing contrast to the rich flavors of the casserole. Furthermore, a dollop of sour cream or a sprinkle of fresh herbs on top before serving can enhance its presentation and add a layer of flavor.

If you're hosting a larger brunch, this casserole works wonderfully alongside other breakfast staples. Think about adding a side of crusty bread or flaky pastries to round out the meal. If you'd like to create a theme, consider a Mediterranean brunch with olives, feta cheese, and pita—offering guests a variety of flavors and textures to enjoy.

Questions About Recipes

→ Can I use frozen spinach instead of fresh?

Yes, you can use frozen spinach, but be sure to thaw and squeeze out excess moisture before adding it to the casserole.

→ How can I make this recipe vegetarian?

This recipe is already vegetarian! Simply skip any meat and load up with extra veggies.

→ Can the casserole be refrigerated?

Absolutely! Store leftovers in the refrigerator for up to three days and reheat before serving.

→ Is it possible to make this gluten-free?

Yes, this recipe is naturally gluten-free as it contains no bread or wheat products.