Slow Cooker Breakfast Casserole with Sausage

If you love a hefty, hearty breakfast, then you’ve come to the right place. This Slow Cooker Breakfast Casserole with Sausage is a substantial start to any day. It’s loaded with eggs, sausage, potatoes, cheese, onions, bell peppers, and more!

slice of slow cooker breakfast casserole on a plate.

Breakfast isn’t just the most important meal of the day, it’s the most fun. At least, we think it is! Nothing is better than a big breakfast loaded with your favorite morning staples, and this casserole has all of them!

slow cooker full of cooked breakfast casserole.

❤️ Why You’ll Love This Recipe

  • It only uses a few simple ingredients.
  • It’s loaded with all your favorite breakfast flavors.
  • It’s an easy recipe that anyone can make.
  • It’s hearty enough to satisfy even the biggest eaters.


bowls of cooked sausage, eggs, peppers and onions, hashbrowns, cheddar cheese, pepper jack cheese, salt, pepper and milk.

You’ll only need a few simple, basic ingredients to make this recipe, and you’ll find them all either in your kitchen or at your local grocery store.

All the ingredients are listed here, but you can find the exact amounts in the recipe card at the end of the post.

  • Eggs
  • Milk
  • Hash brown potatoes
  • Breakfast sausage – cooked
  • Onion
  • Red and green bell peppers – chopped
  • Cheddar cheese
  • Pepper jack cheese
  • Salt
  • Black pepper

🔪 How to Make Slow Cooker Breakfast Casserole with Sausage

This is a slow cooker recipe, so it’s incredibly easy to make. It only takes a few minutes of prep, and then the slow cooker does all the work!

cheese, cooked sausage, and hashbrowns in a mixing bowl.

Step 1: Prep

Spray the inside of an 8-quart slow cooker with nonstick spray. Set aside. Then, mix the 2 shredded cheeses in a small bowl and set aside. Mix the cooked sausage, pepper, and onions in a bowl and set aside. Finally, whisk the eggs, milk, salt, and pepper in a bowl and set aside.

hashbrowns, peppers, onions, and cooked sausage being layered in a slow cooker.

Step 2: Layer the Casserole

Layer about 1/3 of the potatoes in the bottom of the slow cooker. Sprinkle 1/3 of the sausage and pepper mixture over the potatoes. Then, sprinkle 1 cup of the shredded cheese over the sausage mixture. Repeat 2 more times ending with the cheese layer.

eggs and cheese being added on top of a casserole in the slow cooker.

Step 3: Add the Eggs

When you’ve layered the casserole ingredients, pour the eggs over everything.

slow cooker full of cooked breakfast casserole.

Step 4: Cook

Cook on low for 8 hours and enjoy!


  • Spicy – Add red pepper flakes or diced jalapenos.
  • Add Vegetables – Try adding mushrooms to this casserole.
  • Cheese – Use your favorite cheeses for this recipe.
  • Vegetarian – Use vegan sausage, cheese, and egg substitute to make this casserole.

If you think this breakfast casserole looks good, then try our overnight egg casserole.

🥄 Equipment

  • Measuring cups and spoons
  • 8-quart slow cooker
  • Nonstick spray
  • Mixing bowls
  • Whisk
bite of breakfast casserole on a fork held in the air.

🥫 Storage

Refrigerate this casserole in an air-tight container for up to 4 days. For longer storage, freeze it for up to 3 months in an air-tight, freezer-safe container.

What to Serve With Breakfast Casserole

Serve this casserole with pancakes or waffles. You can top it with sour cream, salsa, pico de gallo, or syrup, as well.

💭 Tips

  • Mix the different layers of ingredients before layering to ensure everything is properly distributed.
  • You can set your slow cooker to low before bed and wake up to a hot breakfast!
  • Be sure you drain your sausage before adding it to the casserole to prevent a greasy dish.

⁉️ FAQ

Do you have questions about this recipe? Here are the answers to the most commonly asked questions.

What is breakfast casserole?

Breakfast casserole is a one-dish meal made with all your favorite breakfast ingredients like eggs, sausage, cheese, potatoes, and vegetables.

Can I use any kind of cheese in this casserole?

Absolutely. You can use your favorite cheese in this casserole. They all work!

What kind of meat can be used in a breakfast casserole?

You can add bacon, sausage, ground beef, or ham to a breakfast casserole.

What kind of vegetables are good in a breakfast casserole?

Try onions, bell peppers, mushrooms, and jalapenos for a kick of heat.

🍽 More Recipes

Do you enjoy casserole? Then try these delicious recipes:

If you’re looking for another quick and easy breakfast, this Avocado Toast with Grated Egg is one of our favorites. This delicious vegetarian breakfast is quick, easy and always a winner!

🧾Recipe Card

Want to make this recipe? Print the recipe card below, or pin this recipe, so you can find it later.

slice of slow cooker breakfast casserole on a plate.

Slow Cooker Breakfast Casserole with Sausage

This slow cooker breakfast casserole with sausage is hefty, hearty, and loaded with sausage, eggs, potatoes, cheese, onions, and peppers!
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Course: Breakfast
Cuisine: American
Prep Time: 15 minutes
Cook Time: 8 hours
Total Time: 8 hours 15 minutes
Servings: 8 Servings
Calories: 549kcal


  • Measuring Cups and Spoons
  • 8-quart slow cooker
  • Nonstick spray
  • mixing bowls
  • Whisk


  • 12 eggs
  • 1 cup milk
  • 2 pounds hash brown potatoes
  • 1 pound breakfast sausage cooked
  • ½ onion
  • ½ cup red and green bell peppers chopped
  • 1 ½ cups cheddar cheese
  • 1 ½ cup pepper jack cheese
  • 1 teaspoon salt
  • ½ teaspoon black pepper


  • Spray the inside of the 8 quart slow cooker with nonstick cooking spray. Set aside.
  • Mix the two shredded cheeses together in a small bowl and set aside. Mix the cooked sausage and peppers and onions together in a small bowl and set aside.
  • Whisk the eggs together in a medium sized bowl until well mixed. Whisk in the milk, salt and pepper, set aside.
  • Layer around 1/3 of the potatoes on the bottom of the slow cooker. Sprinkle 1/3 of the sausage mixture all around. Sprinkle 1 cup of the shredded cheese mixture on top. Repeat 2 more times. End with the cheese layer.
  • Once all the layers have been made, pour the egg mixture all over top. Cook on low for 8 hours. (You can do this overnight) Serve and enjoy!
  • Tips and tricks!


Any nutritional data I provide is an approximation and actual dietary information can vary based on ingredients and proportion sizes.


Serving: 1Serving | Calories: 549kcal | Carbohydrates: 24g | Protein: 31g | Fat: 37g | Saturated Fat: 16g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 13g | Trans Fat: 0.1g | Cholesterol: 330mg | Sodium: 1048mg | Potassium: 666mg | Fiber: 2g | Sugar: 3g | Vitamin A: 1116IU | Vitamin C: 22mg | Calcium: 402mg | Iron: 3mg

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