Spinach Mushroom Breakfast Casserole

Name: Spinach Mushroom Breakfast Casserole
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Yield: 6 servings
Ingredients: 4 cups fresh spinach, chopped; 2 cups mushrooms, sliced; 1 cup milk; 6 large eggs; 1 cup shredded cheese (cheddar or mozzarella); 1 teaspoon garlic powder; Salt and pepper to taste; 1 tablespoon olive oil

Highlighted under: Quick & Easy Meals

This Spinach Mushroom Breakfast Casserole is a delightful way to start your day. Packed with nutritious spinach and flavorful mushrooms, this dish is perfect for brunch or a hearty breakfast.

Created by

Lena

Last updated on 2025-12-23T00:10:28.185Z

This Spinach Mushroom Breakfast Casserole combines the earthy flavors of mushrooms with the fresh taste of spinach, all held together in a fluffy egg base. Whether you're feeding a crowd or meal prepping for the week, this dish delivers on both flavor and nutrition.

        Why You Will Love This Recipe
        Deliciously savory with a hint of garlic and herbs
Nutritious and packed with vitamins from spinach
Easy to prepare and perfect for any meal of the day

      

A Nutritious Start to Your Day

Starting your day with a wholesome breakfast is essential for maintaining energy levels and overall health. This Spinach Mushroom Breakfast Casserole is not only delicious but also packed with nutrients. Spinach is an excellent source of vitamins A, C, and K, as well as iron and calcium, making this dish a powerhouse of nutrition.

Mushrooms add a savory depth to the casserole while providing essential minerals such as selenium and potassium. Together, these ingredients create a balanced meal that can keep you feeling satisfied until lunch. Plus, the combination of eggs and cheese adds protein to help fuel your morning.

With its vibrant colors and rich flavors, this casserole is sure to please both kids and adults alike. It's a fantastic option for those busy mornings when you need something quick yet nutritious.

Perfect for Any Occasion

This Spinach Mushroom Breakfast Casserole is incredibly versatile and can be served for various occasions. Whether you’re hosting a weekend brunch, preparing for a holiday gathering, or simply enjoying a family breakfast, this dish fits right in. Its make-ahead nature makes it convenient for busy schedules, allowing you to enjoy a hearty meal without the morning rush.

You can also customize the casserole to suit your tastes or dietary needs. Feel free to swap out the spinach for kale, add different vegetables like bell peppers or tomatoes, or use a variety of cheeses. This flexibility ensures that you can adapt the recipe to whatever ingredients you have on hand.

Moreover, leftovers can be easily stored in the refrigerator and reheated for a quick meal later in the week, making it a practical choice for meal prep enthusiasts.

Tips for the Perfect Casserole

Ingredients

Casserole Ingredients

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

Mix and match your favorite vegetables for added flavor!

Instructions

Preheat the Oven

Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish.

Sauté Vegetables

In a large skillet, heat olive oil over medium heat. Add sliced mushrooms and cook for about 5 minutes until softened. Add chopped spinach and cook until wilted, about 3 minutes. Remove from heat.

Prepare Egg Mixture

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

Combine Ingredients

In the prepared baking dish, layer the sautéed vegetables and pour the egg mixture over the top. Sprinkle shredded cheese evenly.

Bake the Casserole

Bake in the preheated oven for 30-35 minutes, or until the casserole is set and the top is golden brown.

Serve

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

This casserole is great for leftovers and can be reheated easily!

Storage Recommendations

Proper storage is key to enjoying your Spinach Mushroom Breakfast Casserole for days to come. Once cooled, store any leftovers in an airtight container in the refrigerator. The casserole will stay fresh for about 3 to 4 days, making it a great option for meal prep.

If you want to store it for a longer period, consider freezing individual portions. Wrap the slices tightly in plastic wrap and place them in a freezer-safe container or bag. They can be frozen for up to 3 months, allowing you to enjoy a quick breakfast option anytime.

To reheat, simply thaw in the refrigerator overnight and warm the individual portions in the microwave or oven until heated through. This makes busy mornings much more manageable!

Serving Suggestions

This casserole is delicious on its own, but it pairs beautifully with a variety of side dishes. Consider serving it with a fresh fruit salad for a burst of sweetness and additional vitamins. A dollop of Greek yogurt or a side of avocado can add creaminess and healthy fats to your meal.

For a heartier breakfast, you might serve it alongside crispy bacon or sausage. The savory flavors of the meat complement the casserole's richness, creating a satisfying and well-rounded meal.

Finally, don't forget to offer a selection of beverages. Freshly squeezed juice, coffee, or herbal tea can enhance your breakfast experience, making it a delightful start to the day.

Questions About Recipes

→ Can I make this casserole ahead of time?

Yes, you can prepare it the night before, refrigerate, and bake it in the morning.

→ Can I use frozen spinach?

Absolutely! Just make sure to thaw and drain any excess water before using.

→ What other vegetables can I add?

Feel free to add bell peppers, onions, or zucchini for extra flavor and nutrition.

→ Is this recipe gluten-free?

Yes, this recipe is naturally gluten-free as it doesn’t contain any flour or bread.