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A simple egg breakfast casserole, freshly baked and golden brown.

Simple Egg Breakfast Casserole with Spinach and Bell Peppers

This simple egg breakfast casserole is packed with fresh spinach and colorful bell peppers, making it a delicious and healthy start to your day. Perfect for meal prep or a weekend brunch!
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Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings: 6 slices
Calories: 250
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 12 large eggs
  • 1/2 cup milk whole or 2%
  • 1 cup shredded cheddar cheese
  • 1 cup chopped bell peppers any color
  • 1/2 cup chopped onion
  • 1 cup fresh spinach
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • Cooking spray or butter for greasing

Equipment

  • Oven
  • Baking Dish (9x13 inch)
  • Large Bowl
  • Whisk

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C) and lightly grease a 9x13 inch baking dish.
  2. Scatter the chopped bell peppers, onion, and fresh spinach evenly into the bottom of the prepared baking dish.
  3. Sprinkle half of the shredded cheese over the vegetable layer.
  4. In a large bowl, whisk together the eggs, milk, salt, and pepper until well combined and slightly foamy.
  5. Pour the egg mixture over the fillings in the baking dish, then gently shake to ensure even distribution.
  6. Sprinkle the remaining shredded cheese over the top of the casserole.
  7. Bake for 30-35 minutes, or until the casserole is set, puffed, and lightly golden brown.
  8. Remove from the oven and let it rest for 5-10 minutes before slicing and serving.

Notes

For extra flavor, you can add cooked sausage or bacon. Feel free to customize with your favorite vegetables. The casserole reheats well for quick breakfasts throughout the week.