Breakfast Casserole with Spinach Feta (Print)

Fluffy casserole with spinach, feta, and eggs—ideal for a make-ahead breakfast or quick brunch.

# Ingredients:

→ Vegetables

01 - 5 ounces fresh spinach, roughly chopped
02 - 1 medium yellow onion, finely diced
03 - 1 red bell pepper, diced

→ Dairy & Eggs

04 - 8 large eggs
05 - 1 cup whole or 2% milk
06 - 1 cup crumbled feta cheese
07 - 1/2 cup shredded mozzarella cheese

→ Pantry & Seasonings

08 - 2 tablespoons olive oil
09 - 1/2 teaspoon salt
10 - 1/4 teaspoon freshly ground black pepper
11 - 1/4 teaspoon dried oregano

→ Optional

12 - 1/4 cup sun-dried tomatoes, chopped

# Directions:

01 - Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish with olive oil or nonstick spray.
02 - Heat olive oil in a large skillet over medium heat. Add diced onion and red bell pepper; cook for 3 to 4 minutes until softened.
03 - Add chopped spinach to the skillet. Cook for approximately 2 minutes until just wilted. Remove from heat and allow vegetables to cool slightly.
04 - In a large mixing bowl, whisk eggs, milk, salt, black pepper, and oregano until thoroughly blended.
05 - Gently fold sautéed vegetables, crumbled feta, shredded mozzarella, and sun-dried tomatoes (if using) into the egg mixture.
06 - Pour the prepared mixture evenly into the greased baking dish. Bake for 35 to 40 minutes, until the center is set and the top is lightly golden.
07 - Allow casserole to cool for 5 minutes before slicing. Serve warm, garnished with fresh herbs if desired.

# Expert Tips:

01 -
  • Uses everyday ingredients you likely already have
  • Takes just under an hour from start to finish including hands off oven time
  • Great for meal prepping and can be made the night before
  • Vegetarian but hearty and full of flavor
02 -
  • High in protein with plenty of veggies for a balanced meal
  • Fantastic for meal prep and lunches throughout the week
  • Freezes well so nothing ever goes to waste
03 -
  • Always let baked casseroles rest before slicing so they cut neatly and do not fall apart
  • For deeper flavors try sautéing half a clove of minced garlic with the onions
  • Never skip greasing the baking dish or you will have a tough cleanup

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