Wake up to the ultimate comfort breakfast with this Slow Cooker Breakfast Casserole! Packed with fluffy eggs, savory sausage, melted cheese, and hearty hash brown potatoes, this hands-off crockpot recipe makes mornings effortless. Whether you’re feeding a crowd, hosting brunch, or meal-prepping for the week, you just layer everything in the slow cooker and let it do the work.
A crockpot breakfast casserole is one of those recipes that earns its place in your rotation fast. It’s a true one-pot, set-it-and-forget-it meal: hearty ingredients like eggs, breakfast sausage, cheese, and potatoes cook low and slow into a satisfying dish for any breakfast or brunch gathering.
Enjoy a stress-free, homemade breakfast with this easy and flavorful slow cooker dish!
Why You’ll Love This Recipe
- Effortless one-pot cooking – Minimal cleanup, maximum flavor in a single crockpot.
- Perfect for meal prep – Make ahead for quick breakfasts all week long.
- Feeds a crowd – Great for family gatherings, holidays, and brunch.
- Customizable – Easily swap the meats, cheeses, and veggies you have on hand.
- Rich and satisfying – Loaded with eggs, sausage, and gooey melted cheese.
- Hands-off – The slow cooker does the work while you do something else.
- Overnight-friendly – Assemble the night before and cook in the morning.
If you love easy breakfast recipes, also try my Air Fryer Pancakes, Air Fryer Cinnamon Baked French Toast, or Air Fryer Chocolate Chip Bagels.
Ingredients Needed
- Eggs – The protein-packed base that sets into a fluffy casserole.
- Breakfast sausage – Savory, seasoned meat for rich flavor.
- Shredded cheese – Melty cheddar (or your favorite) for a creamy, cheesy bite.
- Milk – Helps create a light, custardy texture.
- Shredded hash browns – Crispy, golden potatoes for heartiness.
- Bell peppers – Add color, sweetness, and a little crunch.
- Onion – Brings a mild, savory depth of flavor.
- Salt & pepper – Essential seasonings to round everything out.
- Garlic powder – A touch of bold, aromatic spice.
How to Make a Slow Cooker Breakfast Casserole
Step 1: Brown the sausage. In a skillet over medium heat, cook the breakfast sausage until browned, breaking it up as it cooks. Drain any excess grease. (If your slow cooker has a sauté or sear function, you can brown it right in the insert instead.)
Step 2: Prep the other ingredients. While the sausage cooks, dice the bell peppers and onion. In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder until well combined.
Step 3: Lightly grease the slow cooker insert (or use a liner for even easier cleanup). Spread the hash browns evenly across the bottom. Add the cooked sausage, then scatter the peppers and onions on top. Pour the egg mixture over everything, making sure it covers the layers, then sprinkle the shredded cheese over the top.
Step 4: Slow cook. Cover and cook on HIGH for 3–4 hours or LOW for 6–7 hours, until the eggs are fully set and the edges are golden. Cooking times vary by slow cooker, so start checking at the 3-hour mark on high.
Step 5: Rest and serve. Let the casserole rest for a few minutes before slicing. Serve warm and enjoy a hearty, flavorful breakfast!
Recipe Tips
- Garnish. Finish with fresh parsley or chives for a pop of color and flavor.
- Customize your veggies. Swap the peppers and onions for spinach, mushrooms, or tomatoes.
- Add more protein. Bacon, diced ham, or extra sausage all make it heartier — a batch of air fryer Jimmy Dean sausage stirs in beautifully.
- Use fresh ingredients. Freshly grated cheese melts better than pre-shredded and elevates the flavor.
- Season to taste. A pinch of paprika or cayenne adds a little warmth and heat.
- Watch the edges. Slow cookers run hotter around the rim, so the edges set first — check the center for doneness.
- Make it overnight. Assemble everything (except adding the cheese on top), refrigerate, then cook in the morning. Add a little time if it’s going in cold.
How to Store
- Refrigerate: Once cooled, store leftovers in an airtight container in the fridge for up to 3–4 days.
- Freeze: Slice into portions, wrap each piece, and freeze in a freezer-safe bag for up to 2–3 months.
- Reheat: Microwave individual portions for 1–2 minutes, or cover with foil and warm in a 350°F oven for 15–20 minutes until heated through.
What to Serve With Slow Cooker Breakfast Casserole
This casserole pairs beautifully with fresh fruit, like sliced berries or a little candied citrus, for a refreshing contrast to the rich, savory eggs. Add a side of crispy air fryer bacon or air fryer sausage links to lean into the hearty flavors. If you’d rather keep things light, serve it with a spinach strawberry salad or a simple avocado-based salad to balance the richness. Round it out with a hot cup of coffee or even a caramel frappuccino for a complete breakfast spread.
Frequently Asked Questions
Can I use a different type of meat? Yes! Substitute the sausage with bacon, ham, or a plant-based alternative for a different flavor.
Can I make this casserole overnight? Absolutely. Assemble it the night before, refrigerate, and cook it in the morning. Add a little cooking time since it’ll be cold from the fridge.
What kind of cheese works best? Cheddar is the classic choice, but mozzarella, Monterey Jack, or pepper jack all work well.
Can I use frozen hash browns? Yes, frozen hash browns work perfectly. Just spread them evenly across the bottom so they cook through.
Do I have to brown the sausage first? Browning develops the best flavor and renders out grease, so it’s recommended. If you’re short on time, use pre-cooked crumbled sausage and skip ahead to layering.
How do I know when it’s done? The casserole is ready when the eggs are fully set and the edges are golden. A knife or toothpick inserted in the center should come out clean.
Can I make it in the oven instead? Yes — bake at 350°F for 40–45 minutes, or until the eggs are set and the top is golden. If you love a baked casserole, you’ll want to bookmark these fall comfort casseroles too.
More Slow Cooker Recipes
- Jack Daniel’s Crock Pot Pulled Pork
- Easy Slow Cooker Chicken and Dumplings
- Easy Slow Cooker Scalloped Potatoes
- 3 Ingredient Crock Pot Pork Chops (French Onion & Cream of Mushroom)
- Easy Slow Cooker Matzo Ball Soup
Slow Cooker Breakfast Casserole
Description
Ingredients
- 6 large eggs
- 1 pound breakfast sausage, cooked and crumbled
- 1 1/2 cups shredded cheddar cheese
- 1 cup milk
- 4 cups shredded hash browns, frozen
- 1 cup bell peppers, diced (any color)
- 1/2 cup onion, diced
- 1 teaspoon salt, to taste
- 1/2 teaspoon black pepper, to taste
- 1 teaspoon garlic powder, to taste
Instructions
- In a skillet over medium heat, cook the breakfast sausage until browned, breaking it up as it cooks. Drain excess grease. (Or brown it in the slow cooker insert if it has a sauté function.)
- While the sausage cooks, dice the bell peppers and onion. In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder.
- Lightly grease the slow cooker insert. Spread the hash browns evenly across the bottom, then add the cooked sausage, peppers, and onions. Pour the egg mixture over the top and sprinkle with the shredded cheese.
- Cover and cook on HIGH for 3–4 hours (or LOW for 6–7 hours), until the eggs are fully set and the edges are golden.
- Let the casserole rest for a few minutes before slicing. Serve warm.
Equipment
- Slow Cooker
- Spatula
Nutrition
Share this recipe
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Clancy
I figured it out after reading the entire post. For others who jumped to the recipe as I did, to make this follow the step by step process in the post. You’ll have the correct layering of hash browns. And, yes, it is only four cups of those.
Heather
Followed the recipe exactly, as I’m still trying to learn my new foodi! Came out great! All three of my kids loved it too!