Spring Brunch Egg Casserole With Spinach

Name: Spring Brunch Egg Casserole With Spinach
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Yield: 8 servings
Ingredients: 6 large eggs; 1 cup milk; 2 cups fresh spinach, chopped; 1 cup shredded sharp cheddar cheese; 1 cup shredded mozzarella cheese; 1 teaspoon salt; 1/2 teaspoon black pepper; 1/2 teaspoon garlic powder; 2 cups cubed bread (day-old works best)

Highlighted under: Seasonal & Festive

I love hosting brunches, especially in the spring when fresh ingredients are abundant. This Spring Brunch Egg Casserole with Spinach is not only a crowd-pleaser, but it also comes together effortlessly, allowing me to enjoy the company of my friends and family. The combination of tender spinach, fluffy eggs, and a blend of savory cheeses makes for a satisfying dish that can be prepared in advance. Plus, it’s easily customizable, so I can add in whatever veggies or herbs are on hand!

Created by

Beatrice Holloway

Last updated on 2026-02-24T02:17:37.146Z

When I first tried making a brunch casserole, I was shocked at how easy it was to whip up something so delicious. I decided to focus on fresh spinach because it adds a wonderful flavor and color to the dish. Using a mix of eggs and milk helps create that luscious, fluffy texture that everyone loves. What I really appreciate is that you can prepare it the night before and simply pop it in the oven the next day.

This recipe is perfect for those lazy Sunday mornings when you want to impress your guests without spending hours in the kitchen. I’ve experimented with different cheeses and herbs, and I find that a blend of sharp cheddar and creamy mozzarella gives the best results. Don't forget to season well; it makes a world of difference!

Why You'll Love This Recipe
Loaded with fresh spinach and cheesy goodness
Great for meal prep; make ahead and bake later
Perfect for serving a crowd at brunch gatherings

Perfecting the Egg Base

The foundation of this Spring Brunch Egg Casserole is the egg and milk mixture. Using large eggs ensures a rich, creamy texture, while whole milk adds to the overall fluffiness after baking. If you're looking to cut down on calories, you can substitute half-and-half for the milk. Be sure to whisk the eggs and milk until completely blended, as uneven mixing can lead to a rippled texture rather than a smooth, cohesive casserole.

Incorporating seasonings at this stage is crucial. The garlic powder not only enhances flavor, but it also complements the spinach, making the dish more vibrant. To add even more depth, consider including fresh herbs like thyme or basil, which can provide a bright counterpoint to the savory cheese. Just chop them finely and incorporate them with the eggs before mixing in the other ingredients.

Choosing the Right Bread

Selecting the right type of bread affects both texture and flavor. A day-old sourdough or French baguette is ideal because it holds its shape during baking while absorbing the egg mixture. If you opt for a loaf that’s fresher, toast it lightly before cubing to help it maintain structure. This preventive step can avoid a soggy casserole, which is a common challenge when using fresh bread.

Feel free to get creative with the bread choice! Whole grain or gluten-free bread can easily replace traditional white bread, providing extra nutrients without compromising flavor. Just remember to adjust the seasoning since some breads are saltier than others. Whatever you choose, cutting the bread into uniform cubes will ensure even cooking and that everyone gets a balanced bite.

Serving and Storing

Once baked, the casserole can be served immediately or kept warm in a low oven if you're expecting guests. If you're preparing this dish in advance, it can be stored in the refrigerator for up to three days. To reheat, slice and warm individual portions in the oven at 350°F (175°C) for about 15 minutes, or until heated through and the top regains its delightful crust. Avoid microwaving if possible, as it can lead to a rubbery texture.

As for serving suggestions, this casserole pairs beautifully with fresh fruit or a light salad for a balanced meal. You might also consider drizzling a homemade yogurt sauce or a bit of hot sauce over the top for an extra kick. This flexibility in serving makes it a versatile dish that suits any palate!

Ingredients

For the Casserole

6 large eggs
1 cup milk
2 cups fresh spinach, chopped
1 cup shredded sharp cheddar cheese
1 cup shredded mozzarella cheese
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon garlic powder
2 cups cubed bread (day-old works best)

Note: Feel free to add any of your favorite vegetables or proteins for extra flavor!

Instructions

Preheat the oven

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

Mix the Egg Base

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

Combine Ingredients

Add chopped spinach, cheddar cheese, mozzarella cheese, and cubed bread into the egg mixture. Stir until the bread is fully coated.

Bake

Pour the mixture into the prepared baking dish. Bake in the preheated oven for 45 minutes or until the casserole is set and golden on top.

Serve

Let it cool for a few minutes before slicing into squares. Serve warm and enjoy!

Enjoy this versatile dish that can easily be altered to your taste!

Pro Tips

For an extra layer of flavor, consider adding sautéed onions or bell peppers to the mixture. You can also substitute half the bread for a layer of hash browns for a fun twist!

Variations to Try

This Spring Brunch Egg Casserole is delightfully customizable. For a heartier version, you can add cooked sausage or bacon, keeping in mind that you should adjust cooking times accordingly. Ensure the meat is fully cooked beforehand to maintain the casserole's overall baking time. You can also explore adding different vegetables, such as bell peppers, zucchini, or mushrooms, depending on what you have available in your kitchen.

If you’re looking for a dairy-free option, replacing both cheeses with vegan cheese shreds or nutritional yeast can yield a flavorful alternative. Just keep in mind that the texture might differ slightly, being less creamy while still maintaining a cheesy flavor profile. With these variations, you can transform the dish based on your dietary needs or flavor preferences without sacrificing its enjoyable character.

Tips for Perfect Texture

To achieve the perfect texture, avoid overbaking the casserole, as it can dry out. Check for doneness by gently shaking the dish; the center should be set but slightly jiggly. A toothpick inserted near the center should come out clean but not dry. If you find the top browning too quickly, you can loosely cover the casserole with foil during the last 10 to 15 minutes of baking to prevent burning while the interior sets.

Additionally, allowing the casserole to rest for at least 10 minutes after baking not only enhances the flavor but also helps maintain structural integrity when cutting into squares. The resting period allows the eggs to firm up slightly, preventing excessive spill as you serve. This attention to timing will ensure each slice comes out beautifully, leaving you to impress your guests.

Questions About Recipes

→ Can I prepare this casserole ahead of time?

Absolutely! You can assemble the casserole the night before and keep it in the refrigerator. Just add a few extra minutes to the baking time.

→ What other vegetables can I add?

Some great additions are bell peppers, mushrooms, or even sun-dried tomatoes. Just make sure they are finely chopped.

→ Can I use egg substitutes?

Yes, you can substitute with egg alternatives like flax eggs or commercial egg replacers, but the texture may vary slightly.

→ How do I store leftovers?

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