Easy Make-Ahead Sausage and Egg Breakfast Casserole

This Overnight Sausage Breakfast Casserole is an easy, hearty breakfast that’s perfect for Christmas morning, holiday brunch, or a weekend breakfast with family.

Made with savory breakfast sausage, fluffy eggs, bread, and melted cheddar cheese, it’s a delicious make-ahead breakfast that does most of the work the night before.

Just assemble everything before bed, refrigerate overnight, and bake in the morning. It’s an easy way to enjoy a warm homemade breakfast without spending your entire morning in the kitchen!

Ingredients

• 1 pound breakfast sausage
• 8 slices white bread, cut into cubes
• 2 cups shredded cheddar cheese
• 10 large eggs
• 2 cups milk
• 1 teaspoon dry mustard
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1/2 teaspoon garlic powder (optional)

Instructions

Brown the breakfast sausage in a large skillet over medium heat, breaking it into small pieces as it cooks. Drain off any excess grease.

Grease a 9 x 13-inch baking dish.

Spread the bread cubes evenly across the bottom of the baking dish.

Sprinkle the cooked sausage over the bread, followed by the shredded cheddar cheese.

In a large mixing bowl, whisk together the eggs, milk, dry mustard, salt, pepper, and garlic powder.

Pour the egg mixture evenly over the bread, sausage, and cheese.

Cover the baking dish with foil and refrigerate overnight, or for at least 8 hours.

In the morning, preheat the oven to 350°F. Remove the casserole from the refrigerator while the oven heats.

Bake covered for 30 minutes. Remove the foil and continue baking for another 15–25 minutes, until the center is set and the top is lightly golden. The center should reach 160°F.

Let the casserole rest for about 5–10 minutes before slicing and serving.

Tips for Making Overnight Sausage Breakfast Casserole

• Use your favorite sausage: Regular, mild, or hot breakfast sausage all work well in this recipe.
• Try different cheeses: Cheddar, Monterey Jack, or a Mexican cheese blend are all delicious.
• Add vegetables: Diced bell peppers, mushrooms, or spinach make tasty additions. Cook vegetables first and drain off excess moisture.
• Use day-old bread: Slightly stale bread works especially well because it soaks up the egg mixture without becoming too mushy.

Can You Make Sausage Breakfast Casserole Ahead of Time?

Yes! That’s one of the best things about this recipe. You can assemble the entire casserole the night before, cover it tightly with foil, and refrigerate it overnight.

In the morning, simply bake it according to the instructions. This makes it especially convenient for Christmas breakfast when you would rather spend time with family than prepare a complicated meal.

What to Serve with Sausage Breakfast Casserole

This hearty breakfast casserole is delicious served with fresh fruit, orange juice, coffee, or hot chocolate. You can also serve it with cinnamon rolls, muffins, or a simple fruit salad for a complete holiday breakfast.

More Christmas Breakfast Recipes

Looking for more delicious ideas for your Christmas morning breakfast? Here are a few more easy make-ahead breakfast recipes the whole family will enjoy!

• Christmas Monkey Bread – This sweet, gooey cinnamon-sugar monkey bread is topped with festive sprinkles and makes a fun addition to your Christmas breakfast table.
• Overnight French Toast Casserole – Prepare this delicious French toast casserole the night before and bake it in the morning for an easy holiday breakfast.
• Easy Make-Ahead Cinnamon Roll Breakfast Casserole – Enjoy all the flavors of cinnamon rolls in an easy breakfast casserole you can prepare ahead of time.

How to Store Leftovers

Store leftover sausage breakfast casserole in an airtight container in the refrigerator for up to 3–4 days.

To reheat, place individual portions in the microwave until heated through. You can also reheat larger portions covered with foil in a 325°F oven.

This Overnight Sausage Breakfast Casserole is an easy, delicious way to make Christmas morning breakfast special.

Prepare it the night before, bake it in the morning, and enjoy a warm breakfast with your family!

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