Go Back

Overnight Breakfast Casserole with Sausage

This recipe for Overnight Sausage Breakfast Casserole is a great make-ahead breakfast dish! With basic ingredients like bread, sausage, cheese, and eggs, it's a hearty meal that's perfect for Christmas morning.
Print Recipe
Prep Time:30 mins
Cook Time:45 mins
Resting Time:8 hrs
Total Time:9 hrs 15 mins


  • 16 oz hot sausage can sub equal parts of bacon or ham
  • 10 slices white bread crusts removed
  • 2 cups whole milk
  • 10 eggs
  • 1/2 tbsp salt
  • 1/2 tbsp pepper
  • 2 tbsp yellow mustard can use 2 tsp dry mustard, but yellow mustard is more accessible
  • 2 cups sharp cheddar cheese shredded


  • Cook and crumble the sausage in a large skillet. Drain.
  • Remove crusts from white bread and tear into 1" chunks. Layer in the bottom of a 9x13" baking dish greased with cooking spray or butter. Layer cheese over bread; add drained sausage over cheese.
  • In a large bowl, whisk together milk, eggs, salt, pepper, and mustard until blended. After you stir, pour this egg mixture over the top of the casserole, ensuring all of the bread is soaked.
  • Allow casserole to rest in the fridge for 8-10 hours.
  • When ready to serve, bake at 375 degrees for 45-50 minutes, until entire casserole is set and top starts to brown.
Servings: 8