This overnight breakfast casserole is perfect for entertaining guests. With a few ingredients and a slow cooker, this breakfast dish is a definite crowdpleaser! It’s one of my favorite breakfast recipes to make for Christmas.

Introducing an easy-to-make breakfast casserole

We love to have out of town guests over. Sometimes we serve a breakfast bake because both kids and adults devour it. Other times, I make this overnight breakfast casserole recipe in our slow cooker. Both are equally satisfying. I will admit that I do love the ease of putting all the ingredients into a crockpot the night before. The recipe will transform the aroma of your home. The moment I woke up, I was craving a taste and so were our guests. The work is already done and now the fun part begins! Enjoy such a dish is a pure treat!

A Breakfast Casserole recipe that feeds a crowd

What ingredients are in an overnight breakfast casserole?

• 1 (30 oz) package frozen shredded hash brown potatoes
• ½ lb ground sausage, browned & drained
• 1 lb bacon, cooked & chopped
• 2 cups shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 1 onion, diced
• 1 dozen eggs
• 1 frozen package of green and red peppers (or you cut up fresh veggies)
• ½ cup milk
• 1/4 teaspoon garlic powder
• ½ teaspoon salt
• ¼ teaspoon ground black pepper
• ⅛ teaspoon sugar

How to make a slow cooker breakfast casserole

1. Grease a 6 quart crockpot with cooking spray.
2. Layer half the hash browns in the bottom of the crockpot.
3. Top with half the sausage, bacon, cheese, onions, and peppers.
4. Repeat layers with the rest of the ingredients.
5. Whisk together eggs, milk, salt, pepper, garlic powder, and sugar.
6. Pour egg mixture over all the layers.
7. Cook on low for 6-8 hours or 4 hours on high. (Test your crockpot so the dish doesn’t burn.)
8. Top with sour cream and salsa. Serve with fruit.

How to reheat breakfast casserole

There are several ways to reheat breakfast casserole, some on the stovetop, oven or microwave. Read more.

Can you freeze this breakfast casserole?

Yes, this casserole may be frozen, up to 2 months. Thaw in the refrigerator overnight and bake at 350ºF for about 20 minutes or until heated through. 

Have you made an overnight breakfast casserole? Which dish is your go-to recipe for holiday entertaining and hosting? 

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Overnight Breakfast Casserole Recipe

A breakfast casserole made with sausage, egg and cheese that can be made overnight in the slow cooker.

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Ingredients

• (30 oz) package frozen shredded hash brown potatoes
• ½ lb ground sausage, browned & drained
• 1 lb bacon, cooked & chopped
• 2 cups shredded cheddar cheese
• 1 cup shredded mozzarella cheese
• 1 onion, diced
• 1 dozen eggs
• 1 frozen package of green and red peppers (or you cut up fresh veggies)
• ½ cup milk
• 1/4 teaspoon garlic powder
• ½ teaspoon salt
• ¼ teaspoon ground black pepper
• ⅛ teaspoon sugar

Instructions

1. Grease a 6 quart crockpot with cooking spray.
2. Layer half the hash browns in the bottom of the crock pot.
3. Top with half the sausage, bacon, cheese, onions, and peppers.
4. Repeat layers with the rest of the ingredients.
5. Whisk together eggs, milk, salt, pepper, garlic powder and sugar.
6. Pour egg mixture over all the layers.
7. Cook on low for 6-8 hours or 4 hours on high. (Test your crockpot so the dish doesn't burn.)
8. Top with sour cream and salsa. Serve with fruit.

Did you make this recipe?

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