Breakfast Sausage Casserole (Printable)

Comforting baked dish featuring sausage, eggs, cheese, and golden bread cubes—ideal for feeding a crowd or prepping ahead.

# What You Need:

→ Meats

01 - 1 pound breakfast sausage, casings removed

→ Vegetables & Aromatics

02 - 1 small yellow onion, finely chopped
03 - 1/2 red bell pepper, diced

→ Dairy & Eggs

04 - 8 large eggs
05 - 2 cups whole milk
06 - 2 cups shredded cheddar cheese
07 - 1/2 cup shredded mozzarella cheese

→ Bread

08 - 6 cups day-old bread, cut into 1-inch cubes

→ Seasonings

09 - 1 teaspoon salt
10 - 1/2 teaspoon black pepper
11 - 1/2 teaspoon dried mustard powder
12 - 1/4 teaspoon paprika

→ For Greasing

13 - Butter or nonstick spray

# How To Make It:

01 - Preheat the oven to 350°F. Grease a 9x13-inch baking dish with butter or nonstick spray.
02 - In a large skillet over medium heat, cook the sausage, breaking it up with a spoon, until browned and cooked through, about 5-7 minutes. Add onion and bell pepper; sauté until softened, 3-4 minutes. Drain excess fat.
03 - Spread the bread cubes evenly in the prepared baking dish. Top with the cooked sausage and vegetables.
04 - In a large bowl, whisk together the eggs, milk, salt, pepper, mustard powder, and paprika until well combined. Stir in 1 1/2 cups cheddar cheese and all the mozzarella.
05 - Pour the egg mixture evenly over the bread and sausage in the baking dish. Gently press the bread down so it soaks up the liquid. Sprinkle remaining cheddar cheese on top.
06 - Cover with foil and bake for 30 minutes.
07 - Remove foil and bake another 15 minutes until golden and set in the center.
08 - Let rest for 10 minutes before slicing and serving.

# Expert Tips:

01 -
  • You can assemble it the night before and wake up to something miraculous happening in your oven
  • It feeds a crowd without leaving you stuck at the stove while everyone else is having fun
  • The leftovers reheat so beautifully that Tuesday breakfast feels just as special as Sunday
02 -
  • Baking straight from the fridge adds 10 minutes—cold custard takes longer to set
  • The center test matters more than time—it should jiggle like Jell-O, not slosh like soup
  • Day-old bread is non-negotiable unless you enjoy bread pudding for breakfast
03 -
  • Letting it rest is the difference between neat slices and a messy scoop
  • Buttering the dish generously, even up the sides, prevents any sticking drama
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