This make ahead breakfast casserole is built for an easy morning: assemble sausage, bread, cheddar, peppers, green onions, and seasoned egg custard the night before, then bake when everyone is ready to eat. The long chill lets the bread absorb the custard evenly. Use day-old bread for structure, drain the sausage well, and allow a short rest after baking for neat, satisfying slices.
Thank you for reading this post, don't forget to subscribe!Why This Make Ahead Breakfast Casserole Works
Layering the solid ingredients before adding the egg mixture distributes sausage, vegetables, and cheese throughout the pan. Overnight refrigeration gives the custard time to soak in, while the uncovered bake creates a golden surface and softly set center.
“I don’t know if I’ve ever eaten a better Make-Ahead Breakfast Casserole for Easy Mornings. The rub alone is wonderful, but the sauce??? Over the top!”
Ingredients
- 1 pound breakfast sausage
- 8 large eggs
- 2 cups whole milk
- 1 teaspoon fine salt
- 1/2 teaspoon black pepper
- 1 teaspoon dry mustard
- 6 cups cubed day-old bread
- 2 cups sharp cheddar cheese, shredded
- 1/2 cup red bell pepper, finely diced
- 2 green onions, thinly sliced
Step-by-Step Method
- Cook the breakfast sausage in a skillet over medium heat until browned, then drain it well.
- Whisk the eggs, milk, salt, black pepper, and dry mustard together in a large bowl.
- Grease a 9-by-13-inch baking dish and spread the bread cubes evenly inside.
- Scatter the cooked sausage, cheddar cheese, red bell pepper, and green onions over the bread.
- Pour the egg mixture evenly over the casserole and press the bread gently so it absorbs the custard.
- Cover the dish and refrigerate for at least 8 hours or overnight.
- Remove the casserole from the refrigerator while the oven heats to 350°F.
- Bake uncovered until the center is set and the top is golden, about 40 to 45 minutes.
- Rest for 10 minutes before slicing and serving.
Serving and Storage
Serve the casserole after its ten-minute rest, with fruit or a simple salad if desired. Refrigerate cooled leftovers promptly in a covered container and reheat individual slices until hot through the center.
Helpful Questions
Why use day-old bread?
Slightly dry bread absorbs the seasoned egg mixture while keeping enough structure to create distinct, tender pieces throughout the finished casserole.
“The Make-Ahead Breakfast Casserole for Easy Mornings turned out amazing. My kids asked for seconds. Saving this one!”
Does the casserole need an overnight chill?
It should refrigerate for at least eight hours. That rest is part of the method and gives the custard time to soak into the bread evenly.
How do I know the center is ready?
The middle should look set rather than liquid, and the top should be golden. Resting the baked casserole for ten minutes finishes the texture before slicing.
Make-Ahead Breakfast Casserole for Easy Mornings
Ingredients
Ingredients
- 1 pound breakfast sausage
- 8 large eggs
- 2 cups whole milk
- 1 teaspoon fine salt
- 1/2 teaspoon black pepper
- 1 teaspoon dry mustard
- 6 cups cubed day-old bread
- 2 cups sharp cheddar cheese shredded
- 1/2 cup red bell pepper finely diced
- 2 green onions thinly sliced
Instructions
Instructions
- Cook the breakfast sausage in a skillet over medium heat until browned, then drain it well.
- Whisk the eggs, milk, salt, black pepper, and dry mustard together in a large bowl.
- Grease a 9-by-13-inch baking dish and spread the bread cubes evenly inside.
- Scatter the cooked sausage, cheddar cheese, red bell pepper, and green onions over the bread.
- Pour the egg mixture evenly over the casserole and press the bread gently so it absorbs the custard.
- Cover the dish and refrigerate for at least 8 hours or overnight.
- Remove the casserole from the refrigerator while the oven heats to 350°F.
- Bake uncovered until the center is set and the top is golden, about 40 to 45 minutes.
- Rest for 10 minutes before slicing and serving.
