Go Back
A slice of cheesy sausage breakfast casserole topped with sour cream, cilantro, and diced tomatoes, served with avocado and coffee on the side.

Easy Cheesy Sausage Breakfast Casserole

A hearty, cheesy egg and sausage bake that’s perfect for brunch, weekends, or meal prep. Comforting, customizable, and always a family favorite!
Prep Time 15 minutes
Cook Time 40 minutes
Cuisine American
Servings 8
Calories 380 kcal

Ingredients
  

  • 1 lb 450 g ground breakfast sausage
  • 8 large eggs
  • 1 cup milk or heavy cream for a richer flavor
  • 2 cups shredded cheddar cheese divided
  • ½ cup diced onions
  • ½ cup diced bell peppers
  • ½ tsp salt
  • ¼ tsp black pepper
  • ½ tsp garlic powder
  • 2 cups frozen or cubed hash browns
  • Optional toppings: sour cream fresh cilantro, chopped tomatoes, avocado slices

Instructions
 

  • Preheat oven: to 350°F (175°C). Grease a 9×13-inch baking dish.
  • Cook sausage: In a skillet over medium heat, brown the sausage until cooked through. Drain excess grease.
  • Mix filling: In a large bowl, whisk together eggs, milk, salt, pepper, and garlic powder.
  • Assemble casserole: Layer hash browns, sausage, onions, bell peppers, and 1½ cups cheese in the baking dish. Pour egg mixture evenly over the top.
  • Bake: for 35–40 minutes, until the center is set and the top is golden.
  • Top & serve: Sprinkle remaining cheese on top and bake 5 more minutes. Serve hot with sour cream, tomatoes, and cilantro.

Notes

Tips & Variations

Vegetarian option: Replace sausage with sautéed mushrooms, spinach, or plant-based sausage. Spicy kick: Add diced jalapeños or use pepper jack cheese.
Make-ahead: Assemble the night before, refrigerate, and bake fresh in the morning.
Cheese swap: Try Monterey Jack, mozzarella, or a Mexican blend.

Storage

Refrigerator: Store leftovers in an airtight container for up to 4 days.
Freezer: Wrap individual portions and freeze for up to 2 months.
Reheat: Microwave or bake at 350°F until heated through.
Keyword cheesy breakfast casserole, easy breakfast casserole, egg and sausage casserole, family breakfast ideas, healthy brunch recipes, high protein breakfast, keto breakfast casserole, make ahead breakfast, sausage egg bake, weekend brunch dish