Description
This Baked Spinach and Cheese Egg Casserole is a hearty and delicious breakfast or brunch dish combining fluffy eggs, melted cheddar and mozzarella cheeses, and nutritious spinach. Perfectly seasoned and baked to golden perfection, it’s an easy, make-ahead meal that’s rich in protein and packed with flavors suitable for vegetarians and those following a gluten-free diet.
Ingredients
Scale
Egg Mixture
- 8 large eggs
- 1 cup whole milk
Cheeses
- 1 cup shredded cheddar cheese
- ½ cup shredded mozzarella cheese
Vegetables & Seasonings
- 1 (10 oz) package frozen chopped spinach (thawed and squeezed dry)
- ½ cup diced onion
- ½ teaspoon garlic powder
- ½ teaspoon salt
- ¼ teaspoon black pepper
- Optional: ¼ teaspoon crushed red pepper flakes
Instructions
- Preheat Oven: Preheat the oven to 375°F (190°C) and lightly grease a 9×9-inch baking dish to prevent sticking.
- Mix Eggs and Milk: In a large mixing bowl, whisk together the 8 large eggs and 1 cup of whole milk until the mixture is smooth and homogenous, ensuring a fluffy texture.
- Add Cheeses and Vegetables: Stir in 1 cup shredded cheddar cheese, ½ cup shredded mozzarella cheese, the thawed and squeezed dry frozen spinach, ½ cup diced onion, ½ teaspoon garlic powder, ½ teaspoon salt, ¼ teaspoon black pepper, and the optional ¼ teaspoon crushed red pepper flakes for a subtle kick.
- Transfer to Baking Dish: Pour the well-mixed egg and vegetable mixture evenly into the prepared 9×9-inch baking dish, spreading it out to ensure uniform cooking.
- Bake: Bake in the preheated oven for 30 to 35 minutes, or until the center is fully set and the top turns lightly golden brown, indicating it is cooked through.
- Cool and Serve: Allow the casserole to cool for 5 to 10 minutes before slicing. This resting time helps the casserole set further and makes it easier to serve.
Notes
- Fresh spinach can be used instead of frozen, but it should be sautéed and drained to remove excess moisture.
- For a heartier dish, consider adding cooked bacon or sausage pieces to the mixture before baking.
- Leftovers store well in an airtight container in the refrigerator for up to 4 days and can be easily reheated.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Breakfast, Brunch
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice (approx. 1/6 of casserole)
- Calories: 210
- Sugar: 2g
- Sodium: 330mg
- Fat: 14g
- Saturated Fat: 6g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 4g
- Fiber: 1g
- Protein: 16g
- Cholesterol: 215mg
