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A baked Family Favorite Make Ahead Breakfast Casserole in a dish, ready to serve.

Savory Sausage & Cheddar Overnight Breakfast Bake

This Savory Sausage & Cheddar Overnight Breakfast Bake is a perfect make-ahead meal for a delicious and hassle-free breakfast or brunch. It features crumbled sausage, vegetables, and sourdough bread baked with eggs and sharp cheddar cheese.
Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Servings 8 slices
Calories 400 kcal

Equipment

  • Skillet
  • 9x13 inch baking dish
  • Large bowl
  • Whisk

Ingredients
  

Main Ingredients

  • 12 large Eggs
  • 1.5 cups whole milk
  • 8 slices day-old sourdough bread cubed
  • 1 lb cooked breakfast sausage crumbled
  • 0.5 cup yellow onion diced
  • 0.5 cup green bell pepper diced
  • 2 cups sharp cheddar cheese shredded

Seasoning

  • 1 teaspoon salt
  • 0.5 teaspoon black pepper
  • 0.25 teaspoon garlic powder
  • 0.25 teaspoon paprika

Other

  • 1 tablespoon Butter or oil for sautéing

Instructions
 

Preparation

  • Cook breakfast sausage until browned and crumbled. Sauté diced onion and bell pepper until softened, about 5-7 minutes.

Assemble the Bake

  • Lightly grease a 9x13 inch baking dish and spread cubed sourdough bread evenly across the bottom.
  • Sprinkle cooked sausage and sautéed vegetables over the bread layer.
  • Distribute 1 cup of shredded cheddar cheese over the sausage and vegetable mixture.

Egg Mixture & Chill

  • Whisk together eggs, whole milk, salt, black pepper, garlic powder, and paprika until combined and slightly frothy.
  • Pour the egg mixture over the layers in the baking dish, gently pressing down any bread cubes to submerge them.
  • Sprinkle the remaining 1 cup of shredded cheddar cheese evenly over the top.
  • Cover and refrigerate for a minimum of 4 hours, or preferably overnight (up to 24 hours), to allow flavors to meld and bread to absorb the egg.

Bake & Serve

  • Preheat oven to 350°F (175°C); remove casserole from refrigerator and let sit at room temperature for 15-20 minutes, then remove plastic wrap.
  • Bake for 50-60 minutes until golden brown, puffed up, and a knife inserted into the center comes out clean.
  • Let the casserole rest for 5-10 minutes before slicing and serving for cleaner cuts.

Notes

For extra flavor, you can add a pinch of red pepper flakes to the sausage and vegetable mixture. If you prefer a richer casserole, use half-and-half instead of whole milk. The casserole can be assembled up to 24 hours in advance, making it perfect for entertaining or busy mornings.