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Easy Breakfast Casserole with Sausage and Eggs

Easy breakfast casserole with sausage eggs and cheese on white plate.

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This savory, comforting casserole is the perfect weekend breakfast or brunch. It combines browned sausage, eggs, cheese, and bread in a simple, make-ahead dish that feeds a crowd with minimal effort.

Ingredients

Scale
  • 1 pound breakfast sausage, casings removed if using links
  • 1 medium yellow onion, diced
  • 1 red bell pepper, diced
  • 6 large eggs
  • 2 cups whole milk
  • 1 teaspoon dry mustard
  • 1 teaspoon garlic powder
  • 1/2 teaspoon smoked paprika (optional)
  • Salt and freshly ground black pepper, to taste
  • 6 cups cubed day-old bread (French, sourdough, or hearty white)
  • 2 cups shredded sharp cheddar cheese, divided
  • 1/4 cup chopped fresh chives or parsley, for garnish

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13 inch baking dish.
  2. In a large skillet over medium heat, cook the sausage, breaking it up, until browned. Transfer to a plate lined with paper towels, leaving 1 tbsp drippings in the skillet.
  3. Add diced onion and bell pepper to the skillet. Cook until softened, about 5 minutes.
  4. In a large bowl, whisk together eggs, milk, dry mustard, garlic powder, smoked paprika (if using), salt, and pepper until smooth.
  5. Spread the cubed bread evenly in the prepared baking dish. Scatter the cooked sausage and sautéed vegetables over the bread. Sprinkle with 1 1/2 cups of the shredded cheese.
  6. Pour the egg mixture evenly over everything in the dish. Press down gently with a spatula to submerge the bread. Let sit for 10 minutes to soak.
  7. Sprinkle the remaining 1/2 cup of cheese over the top.
  8. Bake for 45-50 minutes, until the center is set and the top is golden brown. A knife inserted should come out clean.
  9. Let the casserole rest for 5-10 minutes before slicing. Garnish with fresh chives or parsley and serve.

Notes

For a make-ahead option, assemble the casserole, cover, and refrigerate overnight. Let sit at room temperature for 20-30 minutes while the oven preheats before baking. Use day-old or toasted bread for best texture. Leftovers reheat well.

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