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4-Ingredient Sausage Breakfast Casserole

4-ingredient sausage breakfast casserole with a golden, puffy bake—bread cubes, crumbled cooked sausage, whisked egg-milk mixture, and sharp cheddar. Simple breakfast casserole method gives a set center and bubbly cheese crust in about 45 minutes.
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Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings: 8 servings
Course: Breakfast
Cuisine: American
Calories: 470
Ingredients Equipment Method Notes

Ingredients
  

Bread base
  • 6 slices bread Cubed (any type).
  • 1 lb breakfast sausage Cooked and crumbled.
Egg-cheese custard
  • 8 eggs Large eggs.
  • 1.5 cup whole milk
  • 2 cup sharp cheddar Shredded.
  • 0.25 tsp salt To taste.
  • 0.25 tsp black pepper To taste.

Equipment

  • 1 sheet pan

Method
 

Prep the casserole
  1. Preheat the oven to 375°F and grease a 9x13 dish.
  2. Spread the bread cubes evenly in the bottom of the dish.
  3. Scatter the cooked sausage crumbles over the bread.
Mix and assemble
  1. Whisk the eggs and whole milk together with salt and black pepper.
  2. Stir in 1.5 cups of the shredded sharp cheddar until evenly combined.
  3. Pour the egg mixture over the bread and sausage, pressing the bread down to soak, then top with the remaining cheese.
Bake
  1. Bake at 375°F for 40–45 minutes until completely set and golden, with a visibly bubbling cheese top.

Notes

Pro tip: if your sausage is very fatty, use only the crumbles and let excess grease drain before assembling for a cleaner, less greasy slice. Store leftovers covered in the refrigerator up to 4 days; reheat individual portions in the microwave until hot. Freezing: yes—cool fully, freeze up to 2 months, then thaw in the refrigerator overnight and reheat. For a lighter option, swap whole milk for 2% milk and use reduced-fat sharp cheddar (still bake until set and golden).