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Breakfast casserole in a white square baking pan

Overnight Sausage Breakfast Casserole

Heavenly Home Cooking
This easy overnight sausage breakfast casserole is the perfect make ahead breakfast entree. Simply prep the night before, refrigerate and bake the next morning. It's SO delicious and flavorful! It's the ideal option for your holiday breakfast table, brunch parties, breakfast potlucks, Mothers Day brunch and so much more!
4.67 from 6 votes
Prep Time 15 mins
Cook Time 43 mins
Total Time 58 mins
Course Breakfast, Brunch
Cuisine American
Servings 6 servings
Calories 310 kcal


  • ½ pound ground breakfast sausage
  • 6 large eggs
  • 1 cup milk
  • 2 slices white bread
  • 1 cup cheddar cheese shredded
  • 1 teaspoon yellow mustard
  • ¾ teaspoon salt
  • chopped chives for garnish


  • The night before serving, add sausage to a medium skillet over medium-high heat and cook until browned. Use a wooden spoon or spatula to stir and break up into smaller pieces. Continue cooking until browned. Set aside.
  • In a large mixing bowl, combine eggs, milk, mustard, and salt. Whisk thoroughly.
  • Add cubed bread and cooked sausage to egg mixture. Stir until combined.
  • Spray an 8" square baking dish with cooking spray and pour egg mixture in.
    Sprinkle the top with shredded cheddar cheese.
  • Cover the casserole dish with plastic wrap and refrigerate overnight.
  • The next morning, preheat oven to 325°F (176°C).
    Remove cover from casserole and bake for 35-45 minutes until the top is lightly browned and a meat thermometer inserted in the center registers 160°F (71°C). Remove from oven and let cool for 5 minutes. Serve warm.


To save time and make preparation even easier, you can chop up pre-cooked sausage links or patties or add prepared sausage crumbles. For a healthier version, use turkey or chicken sausage instead.

Nutrition Facts

Calories: 310kcal (16%)Carbohydrates: 7g (2%)Protein: 19g (38%)Fat: 23g (35%)Saturated Fat: 10g (63%)Cholesterol: 237mg (79%)Sodium: 787mg (34%)Potassium: 244mg (7%)Fiber: 1g (4%)Sugar: 3g (3%)Vitamin A: 553IU (11%)Vitamin C: 1mg (1%)Calcium: 235mg (24%)Iron: 2mg (11%)

Nutritional information provided is for one serving and is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.

Total Servings 6 servings
Keyword breakfast casserole
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