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4.9 from 69 votes

Cheesy Breakfast Casserole

The best and easiest make-ahead breakfast casserole loaded with sausage, potatoes and cheesy goodness!

Prep Time
15 mins
Cook Time
15 mins
Total Time
1 hr 5 mins
Servings: 8 servings
Course: Breakfast

Ingredients

  • 2 small russet potatoes diced
  • 4 large eggs
  • ¼ cup milk
  • 1 teaspoon hot sauce optional
  • Kosher salt and freshly ground black pepper to taste
  • 1 tablespoon olive oil
  • 3 Italian sausage links casing removed
  • 1 red bell pepper diced
  • 1 green bell pepper diced
  • 1 cup shredded sharp cheddar cheese divided
  • 2 tablespoons chopped fresh parsley leaves

Instructions

    Cup of Yum
  1. Preheat oven to 350 degrees F. Lightly coat a 9-inch baking dish with nonstick spray.
  2. Place potatoes and 1/4 cup water in a microwave-safe bowl. Cover and place into microwave for 4-5 minutes, or until tender; drain well and set aside.
  3. In a large glass measuring cup or another bowl, whisk together eggs, milk and hot sauce; season with salt and pepper, to taste; set aside.
  4. Heat olive oil in a large skillet over medium high heat. Add Italian sausage and cook until browned, about 3-5 minutes, making sure to crumble the sausage as it cooks; drain excess fat. Stir in bell peppers and potatoes until tender, about 3-4 minutes.
  5. Remove from heat. Stir in 1/2 cup cheddar cheese until well combined.
  6. Place sausage mixture evenly into the baking dish. Pour egg mixture evenly over the top and sprinkle with remaining 1/2 cup cheese.*
  7. Place into oven and bake for 35-40 minutes, or until the eggs are firm.
  8. Serve immediately, garnished with parsley, if desired.

Notes

  • *This can be covered and placed in the refrigerator for up to 24 hours. When ready to reheat, let the covered casserole sit at room temperature for 1 hour.
  • *This can be covered and placed in the refrigerator for up to 24 hours. When ready to reheat, let the covered casserole sit at room temperature for 1 hour.