Hearty Breakfast Sausage Casserole (Print Version)

A savory baked dish blending sausage, eggs, cheese, and bread cubes for a satisfying morning meal.

# What You Need:

→ Meats

01 - 1 pound breakfast sausage, casings removed

→ Vegetables & Aromatics

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

→ 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 (French or sourdough)

→ 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 oven to 350°F. Grease a 9x13 inch baking dish with butter or nonstick spray.
02 - In a large skillet over medium heat, cook sausage until browned, about 5 to 7 minutes. If using, add onion and bell pepper and sauté until softened, 3 to 4 minutes. Drain excess fat.
03 - Spread bread cubes evenly in prepared dish. Top with cooked sausage and vegetables.
04 - In a large bowl, whisk eggs, milk, salt, pepper, mustard powder, and paprika until smooth.
05 - Stir in 1 1/2 cups cheddar cheese and all mozzarella into egg mixture.
06 - Pour egg and cheese mixture evenly over bread and sausage layers. Gently press bread down to absorb liquid.
07 - Sprinkle reserved 1/2 cup cheddar cheese evenly over the top.
08 - Cover with foil and bake for 30 minutes.
09 - Remove foil and bake an additional 15 minutes until golden and center is set.
10 - Let rest for 10 minutes before slicing and serving.

# Expert Advice:

01 -
  • You can assemble it the night before and bake it while you're still in your pajamas.
  • It feeds a crowd without requiring you to be a short-order cook, giving you time to actually enjoy breakfast with the people you love.
  • The combination of crispy bread cubes, tender sausage, and melty cheese creates a texture and flavor that somehow tastes indulgent yet somehow simple.
02 -
  • Day-old bread is essential—if your bread is fresh and soft, it will turn into a mushy mess instead of absorbing the custard and staying tender.
  • Don't skip the resting time after baking; it might seem unnecessary, but those 10 minutes let the custard fully set so your slices stay intact instead of collapsing.
  • If you're making this ahead, cover it and refrigerate overnight, then add 10 extra minutes to your baking time since you're starting from cold.
03 -
  • If your casserole looks like it's browning too fast on top, tent it loosely with foil even after you've removed the first layer—the oven temperature can vary more than you'd think.
  • Leftover casserole reheats beautifully in a 300°F oven for about 15 minutes, and it's honestly delicious cold straight from the fridge the next day if you have any left (which is rare).
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