If you’ve been searching for the ultimate comfort food that effortlessly wakes you up and energizes your morning, look no further than this Overnight Slow Cooker Breakfast Casserole Recipe. It’s the perfect marriage of hearty breakfast sausage, crispy hash browns, melty cheddar cheese, and fluffy eggs all cooked low and slow while you sleep. Imagine waking up to an irresistible, warm casserole ready to fuel your day, without any morning rush or fuss. This recipe is a game-changer for busy mornings, weekend brunches, or whenever you crave a truly cozy start that nourishes both body and soul.
Ingredients You’ll Need
These ingredients are simple pantry and fridge staples that come together to create a casserole bursting with flavor and satisfying textures. Each component plays a key role, from the savory sausage adding a meaty punch to the hash browns offering a lightly crispy base, while the eggs and cheese bind everything into a luscious, creamy dish.
- Breakfast sausage, 1 pound: Use cooked and crumbled sausage to infuse deep, savory flavor throughout the casserole.
- Frozen shredded hash browns, 32 ounces: These provide a crispy, comforting foundation that soaks up the delicious egg mixture perfectly.
- Shredded cheddar cheese, 2 cups: Sharp cheddar melts beautifully, adding gooey richness and a touch of tang.
- Large eggs, 12: The binding agent that transforms the casserole into a custardy, fluffy delight.
- Milk, 1 cup: Adds creaminess and helps the eggs cook up tenderly without drying out.
- Dry mustard, 1 teaspoon: Enhances the dish’s flavor with a subtle zing that complements the cheese and sausage.
- Garlic powder, 1 teaspoon: Introduces a warm, aromatic depth to the overall taste experience.
- Onion powder, ½ teaspoon: Brings a mild sweetness and complexity that balances the savory ingredients.
- Salt and pepper, to taste: Essential seasonings that elevate every layer of this hearty casserole.
How to Make Overnight Slow Cooker Breakfast Casserole Recipe
Step 1: Prepare Your Slow Cooker
Start by thoroughly spraying the inside of a 6-quart slow cooker with nonstick spray. This small step means your casserole won’t stick, making clean-up a breeze and ensuring those layers come out perfectly intact and delicious.
Step 2: Create the Flavor Layers
Now, it’s time for the magic layering process. Begin by placing half of the frozen hash browns evenly in the bottom of the slow cooker. Next, add a layer of half the cooked sausage, followed by a generous sprinkling of half the cheddar cheese. Repeat these layers once more with the remaining hash browns, sausage, and cheese. These gorgeous layers guarantee every bite has a delightful mix of textures and tastes.
Step 3: Whisk the Egg Mixture
In a large bowl, whisk together the eggs, milk, dry mustard, garlic powder, onion powder, salt, and pepper until the mixture is smooth and uniform. This flavored egg custard will soak into the layers below, binding them together and creating a tender, savory custard that’s oh so irresistible.
Step 4: Combine and Set to Cook
Pour the egg mixture evenly over the layered ingredients in the slow cooker. Cover your cooker with its lid, set it to low heat, and let it work its magic for 8 hours while you relax or sleep. By morning, the eggs will be fully set, and the casserole will be heated through, giving you a warm, savory breakfast that’s ready whenever you are.
Step 5: Serve and Enjoy
Once the cooking time is complete, carefully slice the casserole into servings right in the slow cooker or transfer portions to plates. Serve warm for a luscious, fuss-free breakfast that feels special every time.
How to Serve Overnight Slow Cooker Breakfast Casserole Recipe
Garnishes
Elevate your Overnight Slow Cooker Breakfast Casserole Recipe by sprinkling fresh chopped chives, parsley, or even a dash of hot sauce on top. These simple garnishes add brightness and a pop of color that make the dish look as good as it tastes, while adding a refreshing burst of flavor.
Side Dishes
This casserole pairs wonderfully with fresh fruit salad, crispy bacon slices, or a light green salad dressed with lemon vinaigrette. These sides bring a balance of textures and flavors to your breakfast table, adding freshness and variety that complement the rich casserole perfectly.
Creative Ways to Present
Feeling a little fancy? Serve this dish in individual ramekins for personal portions or alongside artisan bread toasted with herb butter. You can also slice it into squares and serve buffet-style for brunch guests, making it an impressive yet incredibly easy crowd-pleaser.
Make Ahead and Storage
Storing Leftovers
Once cooled, store any leftovers in an airtight container in the refrigerator for up to 3 days. This Overnight Slow Cooker Breakfast Casserole Recipe holds together beautifully when reheated, making it an ideal make-ahead breakfast option to enjoy throughout the week.
Freezing
If you want to prepare in advance, you can freeze the casserole after baking by wrapping it tightly in plastic wrap and then foil. For best quality, consume within 2 months. Freeze in individual portions or as a whole casserole to reheat later without losing any flavor or texture.
Reheating
Reheat leftovers in the microwave for 1 to 2 minutes, or warm in a preheated 350°F oven covered with foil for 15 to 20 minutes. This keeps the casserole moist and warm without drying out the cheesy, fluffy eggs you love so much.
FAQs
Can I prepare this casserole without sausage?
Absolutely! You can swap sausage for bacon, ham, or sausage alternatives, or even omit meat entirely for a vegetarian option packed with veggies like bell peppers and mushrooms. The base layers and egg mixture remain the same, ensuring great taste every time.
Will this casserole work in a smaller or larger slow cooker?
Yes, but cooking times may vary. A 6-quart slow cooker is ideal for this recipe, but if yours is smaller, the casserole will be thicker and might require extra cooking time. For larger slow cookers, keep an eye on doneness as the casserole might cook faster.
Can I use fresh potatoes instead of frozen hash browns?
You can, but frozen hash browns help maintain the right moisture level and texture without extra prep. If you prefer fresh potatoes, shred and parboil them first to ensure they cook through properly during the slow cook time.
Is it possible to make this casserole in the oven instead of a slow cooker?
Definitely. After layering and pouring the egg mixture, bake in a preheated 350°F oven for 45 to 55 minutes until the eggs are set and the top is golden. Using a 9×13-inch baking dish works well for oven preparation.
Can I customize the seasoning to suit my taste?
Absolutely! Feel free to add herbs like thyme or rosemary, or swap garlic and onion powders for fresh minced versions. Use different cheeses like pepper jack or Swiss to create your own unique spin on the Overnight Slow Cooker Breakfast Casserole Recipe.
Final Thoughts
This Overnight Slow Cooker Breakfast Casserole Recipe has quickly become a beloved staple in my kitchen because it combines ease, comfort, and incredible flavors in one effortless dish. Whether you’re feeding a crowd or simply craving a satisfying breakfast without the hassle, this recipe will not disappoint. I promise, waking up to this slow cooker wonder is the new best way to start your day!
Print
Overnight Slow Cooker Breakfast Casserole Recipe
- Prep Time: 10 minutes
- Cook Time: 8 hours
- Total Time: 8 hours 10 minutes
- Yield: 8 servings
- Category: Breakfast
- Method: Slow Cooking
- Cuisine: American
Description
A hearty and convenient overnight slow cooker breakfast casserole featuring layers of hash browns, savory sausage, cheddar cheese, and a seasoned egg mixture. Perfect for a no-fuss morning meal that cooks while you sleep, serving a crowd with minimal prep.
Ingredients
Meat
- 1 pound breakfast sausage, cooked and crumbled
Vegetables
- 1 (32-ounce) bag frozen shredded hash browns
Dairy
- 2 cups shredded cheddar cheese
- 12 large eggs
- 1 cup milk
Spices and Seasonings
- 1 teaspoon dry mustard
- 1 teaspoon garlic powder
- ½ teaspoon onion powder
- Salt and pepper, to taste
Instructions
- Prepare the Slow Cooker: Spray the inside of a 6-quart slow cooker with nonstick cooking spray to prevent sticking and make cleanup easier.
- Layer Ingredients: Place half of the frozen shredded hash browns evenly at the bottom of the slow cooker. Add half of the cooked and crumbled breakfast sausage over the hash browns. Sprinkle half of the shredded cheddar cheese evenly on top. Repeat these layers with the remaining hash browns, sausage, and cheese to build the casserole.
- Mix Egg Mixture: In a large bowl, whisk together the large eggs, milk, dry mustard, garlic powder, onion powder, salt, and pepper until the mixture is smooth and fully combined, ensuring the seasonings are evenly incorporated.
- Combine and Cook: Pour the seasoned egg mixture evenly over the layered ingredients in the slow cooker. Cover the slow cooker with its lid and cook on low for 8 hours. The casserole is done when the eggs are set and the entire dish is heated through.
- Serve: Once cooked, carefully slice the breakfast casserole into portions and serve warm for a satisfying, ready-made breakfast.
Notes
- This recipe can be prepared the night before for a ready-to-eat breakfast in the morning.
- Use nonstick spray to make serving easier and prevent sticking to the slow cooker.
- Feel free to add vegetables like bell peppers, onions, or mushrooms to the layers for added nutrition and flavor.
- Check the sausage’s salt content before adding additional salt to avoid over-seasoning.
- Leftovers can be refrigerated for up to 3 days and reheated in a microwave or oven.
