Description
This Easy Overnight Breakfast Casserole is a perfect make-ahead dish combining eggs, sausage, cheese, and bread, soaked overnight and baked to golden perfection. Ideal for busy mornings or feeding a crowd, this hearty casserole features savory flavors and customizable ingredients, making breakfast both simple and delicious.
Ingredients
Scale
Egg Mixture
- 6 large eggs
- 2 cups whole milk
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/2 teaspoon dry mustard powder
Main Ingredients
- 1 cup shredded cheddar cheese
- 1 cup cooked breakfast sausage, crumbled
- 1/2 cup diced bell pepper
- 1/2 cup chopped onion
- 4 cups cubed day-old bread (such as French or sourdough)
Other
- Nonstick cooking spray
- Chopped green onions or parsley for garnish (optional)
Instructions
- Prepare Baking Dish: Lightly grease a 9×13-inch baking dish with nonstick cooking spray to prevent sticking and ensure easy serving.
- Mix Wet Ingredients: In a large bowl, whisk together the eggs, whole milk, salt, black pepper, and dry mustard powder until fully combined and smooth.
- Add Mix-Ins: Stir in shredded cheddar cheese, cooked and crumbled breakfast sausage, diced bell pepper, and chopped onion to evenly distribute all ingredients.
- Combine with Bread: Add the cubed day-old bread into the egg mixture and gently toss until all bread cubes are coated and the mixture is evenly combined.
- Refrigerate Overnight: Pour the mixture evenly into the prepared baking dish, cover tightly with foil or plastic wrap, and refrigerate overnight or for at least 6 hours to allow flavors to meld and bread to soak.
- Preheat Oven: In the morning, remove the casserole from the refrigerator and let sit at room temperature while preheating the oven to 350°F (175°C).
- Bake: Bake the casserole uncovered for 45 to 50 minutes or until the center is set and the top is golden brown and slightly crisp.
- Cool and Serve: Allow the casserole to cool for a few minutes before slicing. Garnish with chopped green onions or parsley if desired, then serve warm.
Notes
- Substitute sausage with bacon or chopped ham for different flavors.
- Add spinach or mushrooms to include extra vegetables and nutrition.
- If short on time, bake immediately after mixing but allow bread to soak for 20 minutes before baking.
