Spinach Mushroom Breakfast Casserole

Name: Spinach Mushroom Breakfast Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 6 servings
Ingredients: 2 cups fresh spinach, chopped; 1 cup mushrooms, sliced; 6 large eggs; 1 cup milk; 1 cup shredded cheese (cheddar or mozzarella); 1 teaspoon garlic powder; 1 teaspoon onion powder; Salt and pepper to taste; 1 tablespoon olive oil

Highlighted under: Soulful Supper Recipes

Enjoy a delicious and nutritious start to your day with this Spinach Mushroom Breakfast Casserole, packed with flavor and wholesome ingredients.

Created by

Emma

Last updated on 2025-12-22T23:19:29.367Z

This Spinach Mushroom Breakfast Casserole is the perfect dish to serve for brunch or a family breakfast. It's hearty, healthy, and full of flavor!

        Why You'll Love This Recipe
        Packed with nutritious spinach and mushrooms
Easy to prepare and perfect for meal prep
Great for feeding a crowd or as leftovers

      

A Wholesome Breakfast Option

Starting your day with a nutritious breakfast has never been easier than with this Spinach Mushroom Breakfast Casserole. Packed with vibrant greens and earthy mushrooms, this dish offers a delightful balance of flavors and textures. The combination of eggs and cheese provides a protein-rich base, making it a satisfying meal that will keep you energized throughout the morning.

With its wholesome ingredients, this casserole is not only delicious but also supports your health goals. Spinach is known for its high levels of vitamins A and C, iron, and antioxidants, while mushrooms add essential nutrients like B vitamins and selenium. Together, they create a powerhouse of nutrients that will nourish your body and mind.

Perfect for Meal Prep

One of the best things about this Spinach Mushroom Breakfast Casserole is its versatility in meal prep. You can easily prepare it ahead of time and store it in the refrigerator for busy mornings. Simply slice and reheat portions as needed, making breakfast a breeze even on hectic days. This is particularly useful for families or individuals looking to streamline their mornings without sacrificing quality.

Additionally, this casserole can be customized to suit your taste preferences or dietary needs. Feel free to add other vegetables, such as bell peppers or zucchini, or swap out the cheese for a dairy-free alternative. The options are endless, allowing you to keep breakfast exciting throughout the week.

A Crowd-Pleaser for Any Occasion

Hosting a brunch or gathering? This Spinach Mushroom Breakfast Casserole is an excellent choice for feeding a crowd. Its simple preparation and large serving size make it a convenient option that can easily accommodate multiple guests. Plus, it’s a dish that appeals to both vegetarians and meat-eaters alike, ensuring everyone leaves the table satisfied.

Not only is it hearty and filling, but the colorful presentation makes it visually appealing as well. Serve it alongside fresh fruit or a light salad for a complete and balanced meal that guests will rave about. Whether for a holiday celebration or a casual get-together, this casserole will surely impress.

Ingredients

For the Casserole

2 cups fresh spinach, chopped
1 cup mushrooms, sliced
6 large eggs
1 cup milk
1 cup shredded cheese (cheddar or mozzarella)
1 teaspoon garlic powder
1 teaspoon onion powder
Salt and pepper to taste
1 tablespoon olive oil

Combine all the ingredients in a bowl before pouring into a baking dish.

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C).

Sauté the Vegetables

In a skillet, heat olive oil over medium heat. Add sliced mushrooms and cook until softened, about 5 minutes. Stir in chopped spinach and cook until wilted, about 2 minutes.

Mix the Egg Mixture

In a large bowl, whisk together eggs, milk, garlic powder, onion powder, salt, and pepper.

Combine and Bake

Add the sautéed vegetables to the egg mixture, then stir in the cheese. Pour the mixture into a greased baking dish and bake for 25-30 minutes or until the center is set.

Serve

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

This casserole can be served with a side of toast or fresh fruit.

Storage and Reheating Tips

To maintain the freshness of your Spinach Mushroom Breakfast Casserole, store any leftovers in an airtight container in the refrigerator. It will stay good for up to 3-4 days, making it perfect for those looking to enjoy a quick breakfast throughout the week. When you're ready to eat, simply reheat portions in the microwave or oven until warmed through.

If you want to prepare the casserole in advance, you can also freeze it. Just ensure it is cooled completely before wrapping it tightly and placing it in the freezer. When you're ready to enjoy it, thaw it overnight in the fridge and reheat as mentioned. This way, you can have a delicious homemade breakfast ready at a moment's notice.

Nutritional Benefits

This Spinach Mushroom Breakfast Casserole is not just tasty but also loaded with health benefits. The spinach provides a wealth of vitamins and minerals, which are essential for boosting immunity and maintaining overall health. It’s a fantastic way to sneak in some greens, especially for those who may be hesitant to eat vegetables in the morning.

Mushrooms, on the other hand, are a low-calorie food that provides a good source of fiber, helping to keep you full longer. They also contain antioxidants that can help protect against cell damage. When combined with eggs, which are rich in protein and healthy fats, this casserole becomes a balanced meal that supports muscle health and energy levels.

Serving Suggestions

This Spinach Mushroom Breakfast Casserole can be enjoyed on its own, but there are many delicious sides that can complement it. Consider serving it with a side of fresh fruit for a sweet contrast. Berries, oranges, or a fruit salad can add a refreshing touch to your meal.

For those who enjoy a bit of crunch, a slice of whole-grain toast or a light green salad could be great additions. You can also drizzle some hot sauce or salsa on top of your slice for an extra kick of flavor. The versatility of this dish means you can adapt it based on your mood or the season, making it a true breakfast favorite.

Questions About Recipes

→ Can I prepare this casserole the night before?

Yes, you can assemble the casserole the night before, cover it, and refrigerate until ready to bake in the morning.

→ Can I freeze leftovers?

Yes, this casserole freezes well. Just cool it completely, then wrap tightly before freezing.

→ What can I substitute for cheese?

You can use dairy-free cheese or leave it out entirely for a lighter version.

→ How long will leftovers last in the fridge?

Leftovers can be stored in the refrigerator for up to 3-4 days.