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Hearty Make-Ahead Breakfast Casserole with Eggs, Cheese, and Savory Fillings Recipe

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4.1 from 28 reviews

This breakfast casserole is a hearty and comforting dish perfect for feeding a crowd. Loaded with eggs, cheese, and savory breakfast sausage or bacon, it’s an ideal make-ahead meal for busy mornings or brunch gatherings.

  • Total Time: 1 hour
  • Yield: 6–8 servings

Ingredients

Basic Ingredients

  • 8 large eggs
  • 1½ cups milk
  • 2 cups shredded cheddar cheese
  • 2 cups cubed bread or hash browns
  • 1 cup cooked breakfast sausage or bacon
  • ½ cup diced onion
  • Salt and pepper, to taste

Instructions

  1. Preheat oven: Preheat your oven to 375°F (190°C) and grease a baking dish to prevent sticking.
  2. Prepare base layer: Spread the cubed bread or hash browns evenly in the bottom of the greased baking dish to form the casserole base.
  3. Add toppings: Evenly distribute the cooked sausage or bacon pieces, diced onions, and shredded cheddar cheese over the base layer.
  4. Mix egg mixture: In a mixing bowl, whisk together the eggs, milk, salt, and pepper until fully combined and slightly frothy for a smooth custard texture.
  5. Pour over layers: Carefully pour the egg mixture evenly over the ingredients in the baking dish, ensuring coverage of all components.
  6. Bake the casserole: Place the dish in the preheated oven and bake for 40 to 45 minutes, or until the casserole is set and a knife inserted in the center comes out clean.
  7. Rest before serving: Remove the casserole from the oven and allow it to rest for a few minutes before slicing and serving to let it set properly.

Notes

  • This casserole can be assembled the night before—cover and refrigerate, then bake fresh in the morning.
  • For added nutrition and flavor, consider adding vegetables such as bell peppers or spinach.
  • Store any leftovers in an airtight container in the refrigerator and consume within 3-4 days.
  • Author: Jessica
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free