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–+ servings
A freshly baked Veggie Breakfast Casserole with spinach, peppers, and onions, cut to show a slice.

Veggie Breakfast Casserole

This breakfast casserole is packed with spinach, bell peppers, and onions. It's a hearty and flavorful way to start your day.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 6 servings
Course: Breakfast
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Casserole
  • 1 tablespoon olive oil
  • 1 medium onion chopped
  • 1 medium bell pepper any color, chopped
  • 2 cups fresh spinach chopped
  • 6 large eggs
  • 1/2 cup milk
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1 cup shredded cheese cheddar or Monterey Jack

Equipment

  • 9x13 inch baking dish
  • Large skillet
  • Knife
  • Cutting board
  • Whisk
  • Measuring cups
  • Measuring spoons

Method
 

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
  2. Heat the olive oil in a large skillet over medium heat. Add the chopped onion and bell pepper and cook until softened, about 5-7 minutes.
  3. Add the chopped spinach to the skillet and cook until wilted, about 1-2 minutes.
  4. Spread the cooked vegetables evenly in the prepared baking dish.
  5. In a separate bowl, whisk together the eggs, milk, salt, and pepper until well combined.
  6. Pour the egg mixture over the vegetables in the baking dish.
  7. Sprinkle the shredded cheese evenly over the top.
  8. Bake for 30-35 minutes, or until the casserole is set and the cheese is melted and lightly golden.
  9. Let the casserole cool for a few minutes before slicing and serving.

Notes

You can add other vegetables like mushrooms or tomatoes. For a richer flavor, you can add cooked sausage or bacon. This casserole can be made ahead of time and reheated.

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