This Slow Cooker Breakfast Casserole is a warm and hearty way to start your day! Packed with eggs, cheese, and your favorite veggies, it’s super easy to make ahead.
What I love most? You throw everything in the slow cooker, set it, and forget it! Perfect for busy mornings when you still want something yummy. Plus, the smell as it cooks is unbeatable! 🥚✨
Key Ingredients & Substitutions
Breakfast Sausage: This adds a savory flavor, but you can swap it for turkey sausage or crumbled tofu for a lighter or vegetarian option. I often use a spicy sausage for a kick!
Eggs: Large eggs are the standard here, but feel free to use egg whites or a dairy-free egg substitute if needed. Just adjust cooking times since they might cook differently.
Cheddar Cheese: I’m a fan of sharp cheddar for its bold flavor. You can use any cheese you like or mix it up with Monterey Jack or pepper jack for a bit of spice.
Cottage Cheese: This gives creaminess. If you’re not a fan, consider ricotta or Greek yogurt for a similar texture and extra protein.
Hash Browns: Frozen hash browns are convenient! If you don’t have them, cubed fresh potatoes or even cooked quinoa can work as a base.
How Do You Get the Right Texture for the Casserole?
The key to a perfect breakfast casserole lies in the cooking process and the right mix of ingredients. Here’s how to ensure the best texture:
- Be sure to thaw the hash browns a bit. This helps mix evenly into the casserole and prevents it from being too watery.
- Cook the sausage well and drain excess fat to avoid a greasy texture.
- Don’t skip the slow cooker! It allows the flavors to meld beautifully while keeping everything moist.
- Let it rest for a few minutes after cooking before serving so it firms up a little more and is easier to cut.
Taking these steps will help you achieve a fluffy and delicious casserole every time!

Slow Cooker Breakfast Casserole
Ingredients You’ll Need:
For the Casserole:
- 1 lb breakfast sausage (removed from casing)
- 6 large eggs
- 1 1/2 cups shredded cheddar cheese, divided
- 1/2 cup cottage cheese
- 1/4 cup milk
- 4 cups frozen hash browns (thawed slightly)
- 1/2 cup diced onion
- 1/4 cup chopped green onions (plus extra for garnish)
- Salt and pepper to taste
- Fresh parsley, chopped (for garnish)
- Optional: cooked and chopped bacon for topping
How Much Time Will You Need?
This delightful breakfast casserole takes about 15 minutes of prep time. You’ll then let it cook in the slow cooker for 4-6 hours. Whether you prepare it in the morning for breakfast or the night before for a hassle-free meal the next day, it’s a wonderful way to start your day!
Step-by-Step Instructions:
1. Cooking the Sausage:
In a skillet over medium heat, cook the breakfast sausage until it’s browned and fully cooked, making sure to break it apart as it cooks. Once done, drain any excess grease and set the sausage aside to cool a little.
2. Mixing the Eggs:
In a large bowl, whisk together the eggs, milk, cottage cheese, salt, and pepper until everything is combined smoothly. This step is important to ensure the eggs are fluffy in your casserole!
3. Combining Ingredients:
Now, stir in the shredded cheddar cheese (make sure to save about 1/2 cup for topping later), the thawed hash browns, cooked sausage, diced onion, and chopped green onions. Mix everything together gently so the ingredients are evenly distributed.
4. Preparing the Slow Cooker:
Next, spray the slow cooker insert with some non-stick cooking spray. This will help prevent your casserole from sticking!
5. Pouring into the Slow Cooker:
Carefully pour the mixture into the slow cooker and spread it out evenly. This way, it will cook uniformly.
6. Cooking Time:
Cover the slow cooker and set it on low for 4-6 hours. The casserole is done when the eggs are set, and the edges start turning golden brown.
7. Adding the Cheese:
About 15 minutes before you plan to serve, sprinkle the reserved cheddar cheese on top of the casserole. Cover again to allow the cheese to melt perfectly.
8. Serving the Casserole:
When it’s time to enjoy your casserole, scoop out portions onto plates. Garnish with extra chopped green onions, fresh parsley, and, if desired, sprinkle some chopped bacon on top for added flavor!
This hearty breakfast casserole is perfect for busy mornings and is sure to please a crowd with its rich flavor and comforting texture!
Can I Use Different Types of Meat?
Absolutely! While breakfast sausage gives it a classic flavor, you can use turkey sausage, ham, or even bacon. For a vegetarian option, opt for crumbled tofu or a veggie sausage.
Can I Make This Casserole Ahead of Time?
Yes, you can prepare everything the night before! Simply mix the ingredients and store them in the slow cooker insert in the fridge. In the morning, just pop it into the slow cooker and cook as directed.
How Do I Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, just warm it in the microwave or oven until heated through. You may want to add a splash of milk to keep it moist!
What Can I Serve with This Casserole?
This dish is great on its own but pairs nicely with fresh fruit, a side salad, or some toast. For a heartier breakfast, consider serving it with pancakes or waffles!
