The Best Overnight Breakfast Casserole – Wake Up to a Hearty Breakfast
Mornings just got easier with this make‐ahead breakfast casserole. Fluffy eggs, savory breakfast sausage, melty cheese, and hearty bread come together in a creamy, custardy bake that you prepare the night before and finish in the morning. It’s a crowd-pleasing, customizable dish that makes breakfast or brunch effortlessly satisfying.
- Prep Time: 15 minutes
- Cook Time: 45–50 minutes
- Total Time: 9 hours (includes overnight refrigeration)
- Yield: 10 servings 1x
- Category: Breakfast, Brunch, Casserole
- Method: Oven Baked (Overnight Prep)
- Cuisine: American, Comfort Food
Ingredients
Scale
- 8 large eggs
- 2 cups whole milk
- 1 lb breakfast sausage, crumbled
- 4 cups day-old bread, cut into 1-inch cubes (French or sourdough work best)
- 2 cups shredded cheddar cheese (or a mix of cheddar and mozzarella)
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Salt and pepper, to taste
Instructions
- Cook the Sausage: In a skillet over medium heat, cook the sausage until browned and crumbled. Drain any excess fat and set aside.
- Layer the Casserole: In a greased 9×13-inch baking dish, evenly layer the cubed bread. Sprinkle the cooked sausage over the bread, then top with the shredded cheese.
- Mix the Egg Mixture: In a large bowl, whisk together the eggs, milk, garlic powder, onion powder, salt, and pepper until well combined.
- Assemble: Pour the egg mixture evenly over the layered bread and sausage. Gently press the bread so it absorbs the liquid.
- Refrigerate Overnight: Cover the dish and refrigerate for at least 8 hours or overnight.
- Bake: Preheat the oven to 350°F. Bake the casserole for 45–50 minutes, or until the eggs are set and the top is golden and bubbly.
- Rest & Serve: Let the casserole rest for 10 minutes before slicing and serving.
Notes
- For best texture, use day-old bread.
- If the top browns too quickly during baking, cover with foil for the last 15 minutes.
- Feel free to add extra ingredients like sautéed veggies or different meats for variety.
Nutrition
- Serving Size: 1/10 of casserole
- Calories: 320
- Sugar: 8g
- Sodium: 550mg
- Fat: 20g
- Saturated Fat: 7g
- Unsaturated Fat: 13g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 2g
- Protein: 18g
- Cholesterol: 220mg