Hearty Breakfast Sausage Casserole (Printer-Friendly)

Comforting baked dish with sausage, eggs, cheese, and golden bread cubes, ideal for breakfast or brunch gatherings.

# What You'll Need:

→ Meats

01 - 1 lb 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 cubes (French or sourdough), approx. 250 g

→ Seasonings

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

→ For greasing

13 - Butter or nonstick cooking spray

# Step-by-Step Guide:

01 - Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish with butter or nonstick spray.
02 - In a large skillet over medium heat, brown sausage, breaking it up with a spoon, for 5–7 minutes. If using, add onion and red bell pepper; sauté for 3–4 minutes until softened. Drain excess fat.
03 - Evenly spread bread cubes in the prepared baking dish. Top with the cooked sausage and vegetables.
04 - In a large bowl, whisk together eggs, whole milk, salt, black pepper, mustard powder, and paprika until combined.
05 - Stir in 1 1/2 cups shredded cheddar and all mozzarella cheese into the egg mixture.
06 - Pour the custard evenly over the bread and sausage. Press gently to allow bread to absorb the liquid.
07 - Sprinkle the remaining 1/2 cup shredded cheddar cheese evenly over the top.
08 - Cover with foil and bake for 30 minutes. Remove foil and bake an additional 15 minutes until the top is golden and the center is set.
09 - Allow casserole to rest for 10 minutes before slicing and serving.

# Expert Tips:

01 -
  • It's the kind of dish that looks fancy enough for guests but comes together faster than you'd expect.
  • Make it the night before and just slide it into the oven while your coffee brews.
  • One pan feeds a crowd, which means less cleanup and more time with the people you're cooking for.
02 -
  • Don't skip the resting time after baking—those ten minutes are when the casserole actually comes together and stops being wet in the center.
  • If you're making this the night before, add ten minutes to the baking time because it goes straight from cold to oven, and it needs that extra time to heat through.
03 -
  • Drain that sausage fat after cooking—it prevents the dish from becoming greasy and lets the other flavors shine.
  • Use bread that's actually been sitting out for a day or two; fresh bread will disintegrate into the custard and lose all structure.
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