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cooked overnight breakfast casserole in a dish

Overnight Breakfast Casserole with Sausage and Cheese

Overnight Breakfast Casserole with Sausage and Cheese is a perfect union of all things brunchy. Eggs, Texas toast, cheese, and maple sausage.
Prep Time 30 minutes
Cook Time 45 minutes
Resting Time 5 minutes
Total Time 1 hour 20 minutes
Course Breakfast
Cuisine American
Servings 8 hearty portions

Equipment

  • chef's knife
  • cutting board
  • measuring cups
  • measuring spoons
  • mixing bowl
  • 9x13 casserole dish
  • paper towels
  • foil
  • large skillet
  • whisk

Ingredients
  

Sausage Mix

  • 1 cup diced green pepper (1/2 large pepper)
  • 1 cup diced white onions (1/2 large onion)
  • 16 ounces maple flavored pork breakfast sausage

Egg Mix

  • 12 eggs
  • 2 cups milk
  • 1 teaspoon sea salt
  • 1/4 teaspoon fresh ground black pepper

Other Key Ingredients

  • 1 Tablespoon butter
  • 8-9 slices Texas toast or other thick bread (sour dough, Italian. Day old bread is great!)
  • 3 cups shredded Colby Jack/Cheddar cheese mix (2 cups with egg, 1 cup on top)
  • 1/3 cup shredded Parmesan cheese

Instructions
 

Prep Work - 5 minutes

  • Prep. Gather all ingredients.
  • Pepper. Wash and remove the stem and seeds from the green pepper. Dice the green pepper by slicing it into strips then, into smaller equal sized squares.
    1 cup diced green pepper (1/2 large pepper)
  • Onion. Cut the onion in half, then cut off the ends - bottom and top, then peel the onion. Dice the onion by cutting the onion in half, then slicing the half into ribbons. Slice the ribbons into smaller equal squares.
    1 cup diced white onions (1/2 large onion)
  • Cheese. Grate the parmesan cheese.
    1/3 cup shredded Parmesan cheese

Sausage Mix - 15 minutes

  • Skillet. Add peppers, onions, and sausage to a large skillet.
    16 ounces maple flavored pork breakfast sausage
  • Cook. Cook over medium heat, breaking up the meat into crumbles.
  • Stir. Cook for 10 minutes or until all the pink is gone from the meat and the veggies are tender. Increase the heat slightly and cook for another 3-5 minutes, allow the sausage to brown. Stir once half way to brown the remaining sides.
  • Drain. Remove the sausage mix from the heat. Carefully drain the excess fat and set the sausage aside.

Eggs - 5 minutes

  • Whisk. In a large mixing bowl, whisk together the eggs for 1-2 minutes until frothy. I used an immersion blender, but you can whisk by hand, just get some air in there to make the casserole light and fluffy.
    12 eggs
  • Combine. Add and whisk in the milk, salt, and black pepper. Then fold in 2 cups of shredded cheese until well combined.
    2 cups milk, 1 teaspoon sea salt, 1/4 teaspoon fresh ground black pepper

Assembly - 5 minutes

  • Prep. Using a paper towel or rubber spatula, spread the butter around the casserole dish, bottom and sides.
    1 Tablespoon butter
  • Bread. Tear up each slice of Texas toast into quarters and place the bread in the casserole dish. Overlap the pieces and evenly cover the bottom.
    8-9 slices Texas toast or other thick bread (sour dough, Italian. Day old bread is great!)
  • Sausage. Spread the sausage mix over the top of the bread.
  • Egg Mix. Pour the egg mix evenly over the sausage, covering all of the bread. Use a measuring cup if you like to make it easier to control where the egg mix goes.
  • Cheese. Top the egg with the remaining cheddar cheese and add grated parmesan.
    3 cups shredded Colby Jack/Cheddar cheese mix (2 cups with egg, 1 cup on top)
  • Cover. Cover the casserole and store in the refrigerator overnight.

Baking - 50 minutes

  • Preheat. Preheat the oven to 375 °F.
  • Bake. Cover the casserole with foil and bake for 35 minutes. Uncover and bake for another 10 minutes until the cheese is melted and golden.
  • Rest. Allow the casserole to stand for 5 minutes before slicing and serving.
Keyword brunch, eggs, New Years Day