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Breakfast Casserole

A hearty protein-rich breakfast, this Breakfast Casserole recipe can be assembled up to 12-hours ahead, making it great for entertaining and morning potlucks.

Course Breakfast
Cuisine American
Prep Time 30 minutes
Cook Time 1 hour
Total Time 1 hour 30 minutes
Servings 12
Author Liz


  • 1 package Jimmy Dean pork sausage
  • 10 eggs lightly beaten
  • 3 c. milk
  • 2 tsp. dry mustard
  • 1 tsp. salt
  • 6 c. cubed bread
  • 2 c. cheddar cheese
  • 1 ½ tsp. black pepper
  • ½-1 c. sliced or diced mushrooms
  • ½-1 c. diced onions


  1. Preheat oven to 325°F.
  2. Butter a 9x13 inch baking dish and set aside.

  3. Cook sausage in a skillet until browned. During the last few minutes of cooking, add onions. Cook onions until translucent and slightly browned. Set aside to cool.
  4. Combine eggs, milk, mustard and salt. Whisk together.
  5. Spread out half of bread in the baking dish. Sprinkle with half the pepper, half the cheese, half the sausage, half the mushrooms, and half the onions. Repeat.
  6. Pour egg and milk mixture over top of casserole.
  7. Bake uncovered for 55-60 minutes, or until eggs are set. Serve immediately.