Slow Cooker Breakfast Casserole is that perfect, cozy dish that you can whip up with minimal effort, yet feel satisfied knowing you’re serving something truly delicious. Imagine waking up to the enticing aroma of warm sausage, fluffy eggs, and melty cheddar cheese wafting through your home. Yes, it’s as comforting as it sounds! This casserole combines savory elements and hearty potatoes into a wonderful breakfast experience that will leave you eager for more.

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I remember the first time I made this Slow Cooker Breakfast Casserole on a chilly Sunday morning. Friends and family gathered in my kitchen, and as I pulled the lid off the slow cooker, the steam danced around us, bringing with it a wave of warmth and good smells. It’s such a go-to dish for those lazy weekends or when you’re hosting brunch. With its vibrant flavors and fill-you-up goodness, you’ll quickly discover why this recipe has a special place in my heart. So, why not give it a try? I promise, it might just become your new breakfast favorite!

Table of Contents

Why You’ll Love This Recipe
Ingredients You’ll Need
How to Make Slow Cooker Breakfast Casserole
Storing & Reheating
Chef’s Helpful Tips
Recipe FAQs
Slow Cooker Breakfast Casserole

Why You’ll Love This Recipe

Simple & Quick: Just 20 minutes of prep and your slow cooker does the rest.
Irresistible Flavor: The combination of spicy sausage and creamy cheddar creates a flavor explosion.
Eye-Catching Appeal: Imagine a beautifully layered casserole that looks as good as it tastes.
Flexible Serving: Perfect for breakfast, brunch, or even a quick weeknight dinner.
Crowd-Pleaser: With eight hearty servings, it’s ideal for gatherings or meal prep.

Ingredients You’ll Need

1 lb. bulk hot pork sausage: This adds a spicy kick, but you can also use mild sausage for a tamer taste.
1 (28-32 ounce) package frozen potatoes O’Brien with peppers and onions, thawed: These mix-ins create an immediate flavor base. Feel free to substitute with frozen hash browns plus ½ cup diced bell pepper and ½ cup diced onion for a customizable option.
2 cups (about 8 ounces) grated sharp cheddar cheese: Sharp cheddar melts beautifully and adds richness to each bite. You can mix it up with Monterey Jack for extra creaminess.
12 large eggs: These provide structure and fluffiness to the dish.
1 cup milk: A splash brings everything together, making the eggs creamy. Whole or 2% milk works best for texture.
1 ½ teaspoons seasoned salt (like Lawry’s): This helps elevate the flavors; regular salt can be used if that’s all you have.
½ teaspoon garlic powder: A hint of garlic enhances the sausage flavor.
½ teaspoon ground black pepper: This adds a bit of warmth and depth.

How to Make Slow Cooker Breakfast Casserole

Brown the sausage: In a large skillet over medium-high heat, add 1 lb. of bulk hot pork sausage. Cook until the meat is no longer pink and the edges are golden and crispy, about 5-7 minutes. Drain off any excess grease to keep the casserole from becoming too oily.
Prepare the slow cooker: Spray a 6 or 7-quart slow cooker with nonstick cooking spray to prevent sticking.
Layer the ingredients: Start by placing half of the thawed potatoes in the bottom of the slow cooker. Next, top with half of the cooked sausage, followed by half of the grated sharp cheddar cheese. Repeat these layers once more, finishing with the remaining cheese on top.
Mix the egg mixture: In a large bowl, whisk together 12 large eggs, 1 cup of milk, 1 ½ teaspoons seasoned salt, ½ teaspoon garlic powder, and ½ teaspoon ground black pepper until combined.
Pour the egg mixture: Gently pour the egg mixture evenly over the layered ingredients in the slow cooker, ensuring everything is well coated.
Cook the casserole: Cover and cook on LOW for 7 to 8 hours or on HIGH for 4 to 5 hours, until the eggs are set in the center and the casserole is slightly puffed.
Let it rest: After cooking, turn off the slow cooker, remove the lid, and place the insert on a cooling rack. Let it rest uncovered for about 30 minutes before slicing and serving. This resting time helps the casserole firm up for better slicing.

Storing & Reheating

Store any leftovers at room temperature for up to 2 hours. After that, transfer the casserole to an airtight container and refrigerate; it will last about 3-4 days in the fridge. For longer storage, freeze slices in an airtight container for up to 3 months. When you’re ready to enjoy it again, reheat in the microwave until warm throughout, which typically takes about 2-4 minutes depending on your microwave’s power. The texture may change slightly, so a quick splash of milk or a sprinkle of cheese before reheating can refresh its richness.

Chef’s Helpful Tips

Avoid overcooking: Cooking time can vary between slow cookers. Keep an eye on it, especially if your model tends to run hot.
Use room temperature ingredients: This helps the casserole cook evenly, so consider letting the eggs and milk sit out for about 30 minutes before you start.
Personalize your flavors: Swap out the sausage for breakfast turkey sausage or a veggie option to suit dietary preferences.
Make-ahead option: Prepare everything the night before, layering it in the slow cooker, covering, and refrigerating. Just pop it on the cooker in the morning for a hassle-free breakfast.
Add veggies: Include additional veggies like spinach or diced tomatoes between layers for an extra nutrition boost.

There’s an undeniable charm in serving a warm Slow Cooker Breakfast Casserole to your loved ones. Not only is this dish hearty and packed with flavor, but it also allows you to enjoy a leisurely morning while it cooks. You’ll appreciate how easy it is to prepare while savoring the delightful aroma filling your kitchen. Take time to experiment with the ingredients and make it your own, whether you stick with my tried-and-true version or play around with your favorite flavors.

Recipe FAQs

Can I use other types of cheese?

Absolutely! While sharp cheddar is fantastic, feel free to use Monterey Jack, Pepper Jack, or even a blend for extra flavor. Just ensure it’s a cheese that melts well for the best texture.

Can I prepare this casserole the night before?

Yes! Simply layer all the ingredients in the slow cooker and refrigerate overnight. In the morning, turn on the slow cooker and let it do the work while you enjoy your coffee.

How do I know when the eggs are cooked through?

You’ll know the eggs are set when they are firm in the center and no longer jiggle. A good visual cue is when the edges slightly puff up and the top looks firm and slightly golden.

Can I freeze leftovers?

Yes, you can freeze individual portions. Cut the casserole into pieces, wrap them well in plastic wrap, and then place them in an airtight container. They’ll keep for up to 3 months. Reheat from frozen, adding a couple of minutes to the microwave or oven time.

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Slow Cooker Breakfast Casserole

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Author: Danae
Prep Time: 20 minutes
Cook Time: 290 minutes
Total Time: 5 hours 10 minutes
Yield: 8 servings 1x
Category: Breakfast
Method: Slow Cooker
Cuisine: American

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Description

This Slow Cooker Breakfast Casserole is perfect for busy mornings. With delicious layers of sausage, potatoes, and eggs, it’s easy to make and packed with flavor, making it an ideal comfort food for breakfast or brunch.

Ingredients

Scale

1 lb. bulk hot pork sausage
1 (28-32 ounce) package frozen potatoes o'brien with peppers and onions, thawed
2 cups (about 8 ounces) grated sharp cheddar cheese
12 large eggs
1 cup milk
1 ½ teaspoons seasoned salt
½ teaspoon garlic powder
½ teaspoon ground black pepper

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Instructions

Brown the sausage in a skillet over medium-high heat until cooked through, then drain excess grease.
Spray a 6 or 7-quart slow cooker with nonstick cooking spray.
Layer half of the thawed potatoes in the bottom of the slow cooker.
Add half of the browned sausage over the potatoes, followed by half of the cheddar cheese.
Repeat the layering with the remaining potatoes, sausage, and end with the remaining cheese on top.
In a large bowl, whisk together eggs, milk, seasoned salt, garlic powder, and black pepper until smooth.
Pour the egg mixture uniformly over the layered ingredients in the slow cooker.
Cover and cook on LOW for 7 to 8 hours or on HIGH for 4 to 5 hours until the eggs are set.
Once cooked, let the casserole cool in the insert on a cooling rack for 30 minutes before slicing and serving.

Notes

You can use hash browns and diced bell pepper/onion as a substitute for frozen potatoes o’brien.
For a spicier flavor, consider using spicy sausage or adding diced jalapenos to the mix.
Leftovers can be refrigerated for up to 4 days and reheated in the microwave.