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Easy One-Pot Breakfast Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.3 from 245 reviews
  • Author: Mary
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Total Time: 50 minutes
  • Yield: 8 servings
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

This Easy One-Pot Breakfast Casserole is a hearty and nutritious start to your day featuring a delicious blend of eggs, cheese, sautéed vegetables, and fresh spinach. Perfect for busy mornings or meal prepping, this casserole is baked to golden perfection with a rich, cheesy texture and a flavorful vegetable medley.


Ingredients

Scale

Egg Mixture

  • 8 large Eggs
  • 1 cup Milk (whole milk preferred)
  • 1 teaspoon Salt
  • 0.5 teaspoon Pepper

Vegetables & Cheese

  • 1 tablespoon Olive Oil
  • 1 medium Onion, finely chopped
  • 1 cup Bell Peppers, diced (mixed colors)
  • 2 cups Spinach, fresh and roughly chopped
  • 2 cups Cheddar Cheese, shredded


Instructions

  1. Preheat Oven: Preheat your oven to 350°F (175°C) to ensure it’s at the perfect temperature for baking the casserole evenly.
  2. Sauté Onion: In a large skillet, heat the olive oil over medium heat. Add the finely chopped onion and sauté for 3-4 minutes until it becomes translucent and fragrant.
  3. Add Bell Peppers: Add the diced bell peppers to the skillet and continue to sauté for another 3-4 minutes until they soften and become tender.
  4. Cook Spinach: Stir in the chopped spinach and cook for an additional 2-3 minutes until it wilts down and incorporates well with the other vegetables.
  5. Prepare Egg Mixture: In a mixing bowl, crack the eggs and add the milk, salt, and pepper. Whisk vigorously until the mixture is well combined and slightly frothy, ensuring a light texture.
  6. Combine Ingredients: Add the sautéed vegetables to the egg mixture and fold in the shredded cheddar cheese, mixing everything until evenly distributed.
  7. Prepare Baking Dish: Grease a 9×13 inch baking dish thoroughly to prevent sticking. Pour the combined mixture into the dish, spreading it evenly for uniform baking.
  8. Bake Casserole: Place the dish in the preheated oven and bake for 30-35 minutes. Bake until the casserole is golden brown on top and a toothpick inserted in the center comes out clean.
  9. Cool and Serve: Remove the casserole from the oven and let it cool for about 10 minutes. Then, cut into squares and serve warm for a satisfying breakfast.

Notes

  • This casserole can be customized by adding cooked sausage or bacon for extra protein and flavor.
  • Use low-fat milk and reduced-fat cheese for a lighter version.
  • To make it gluten-free, ensure all seasonings and additions are gluten-free certified.
  • Prep the vegetables a day ahead to save time in the morning.
  • Store leftovers covered in the fridge for up to 3 days and reheat thoroughly before serving.