Sausage Egg Crock Pot Recipe: Slow-Cooked Breakfast Casserole

This slow-cooker breakfast casserole delivers a foolproof morning meal with minimal effort. The combination of sausage, eggs, and cheese creates a hearty dish that feeds a crowd.

I developed this method after too many rushed mornings—prep it the night before and wake up to a ready-to-serve meal. The crock pot does all the work while you sleep.

You’ll get a perfectly set egg mixture with savory sausage and melted cheese throughout. It’s ideal for busy families or weekend gatherings.

Customize with your favorite cheese or vegetables for a dish that’s always satisfying. Here’s how to make it.

Ingredients for Sausage Egg Crock Pot

A hearty mix of sausage, eggs, and cheese for a crowd-pleasing slow-cooker breakfast.

The sausage sets the tone here. Jimmy Dean is my go-to for consistent flavor, but any breakfast sausage works—just remove the casings (or buy it loose). Whole milk gives the eggs that rich, custardy texture; don’t skimp with low-fat. For the cheese, block cheddar you grate yourself melts better than pre-shredded. Grab it from the deli counter if you want to avoid additives.

No breakfast sausage? Ground pork with a pinch of sage and pepper does the trick. Swap the cheddar for Pepper Jack for a kick or Monterey Jack for creaminess. Fresh diced potatoes can replace the hash browns (par-cook them first). Out of baking powder? Skip it—the dish will still set, just a bit denser. The bell pepper can be any color, or omit entirely if you’re not a fan.

Assemble the night before, then refrigerate—8 hours max before cooking. Leftovers keep 4-5 days in the fridge or freeze for 2 months. Reheat single portions in the microwave (cover with a damp paper towel to prevent drying).

Step-by-Step Instructions for Sausage Egg Crock Pot Casserole

Here’s my tested method for a hands-off breakfast that feeds a crowd.

Step 1: Brown the Breakfast Sausage and Prep Vegetables

In a large skillet over medium-high heat, crumble the 1 lb Breakfast Sausage (casings removed) and cook for 5-7 minutes until fully browned and cooked through. I use a wooden spoon to break it into small, even pieces as it cooks.

While the sausage browns, finely dice the 1 whole Yellow Onion and 1 whole Red Bell Pepper. Drain the 2 lb Frozen Hash Brown Potatoes thoroughly in a colander and press with paper towels to remove excess moisture. This prevents the casserole from becoming watery.

Step 2: Whisk Together the Egg Mixture

In a large mixing bowl, whisk the 12 whole Large Eggs until frothy. Add the 1 cup Whole Milk, 0.5 cup All-Purpose Flour, 1 tsp Baking Powder, 1 tsp Salt, 0.5 tsp Black Pepper, 1 tsp Garlic Powder, and 0.5 tsp Dried Mustard. Whisk vigorously for 1 full minute until completely smooth and no lumps remain.

The flour and baking powder create a custard-like texture that holds everything together, while the dried mustard adds a subtle depth that balances the richness. Don’t skip whisking—this ensures even distribution of the leavening agents.

Step 3: Layer Ingredients in the Slow Cooker

Lightly grease your slow cooker insert. Spread the drained 2 lb Frozen Hash Brown Potatoes evenly across the bottom, then sprinkle the diced 1 whole Yellow Onion and 1 whole Red Bell Pepper over the top. Distribute the cooked 1 lb Breakfast Sausage evenly, then pour the egg mixture over everything.

Finally, sprinkle the 2 cups Shredded Cheddar Cheese evenly over the surface. I use sharp cheddar for a bold flavor that stands up to the sausage. Gently press down on the layers with a spatula to ensure the egg mixture seeps into all the nooks and crannies.

Step 4: Cook and Verify Doneness

Cover and cook on low heat for 4-5 hours or on high heat for 2-3 hours. The casserole is done when the center is set and no longer jiggly, and an inserted knife comes out clean. The edges should be golden brown and slightly pulled away from the sides of the crock.

Real talk: every slow cooker runs differently, so start checking at the 3-hour mark on high or 4-hour mark on low. If the top browns too quickly, tent loosely with foil to prevent over-browning while the center finishes cooking.

Serving Suggestions for Leftovers

Breakfast Buffet Style

Serve this directly from the crock pot at brunch gatherings—I set mine to warm and let guests scoop their own portions. A large serving spoon works best for getting all the layers. The presentation looks rustic and inviting when served family-style. 💛

Fresh Garnishes

Brighten each serving with fresh toppings. I love chopped green onions or cilantro for color, while sour cream and salsa add creamy or tangy contrasts. A sprinkle of shredded cheese on top never hurts either.

Bread Pairings

Offer warm biscuits or toasted English muffins alongside for soaking up any extra egg mixture. Pillsbury biscuits bake in 12-15 minutes at 375°F—perfect timing while the casserole rests. Buttered Texas toast works too.

Light Additions

A simple fruit salad balances the richness. I mix diced strawberries, blueberries, and pineapple chunks with a squeeze of lime. The acidity cuts through the savory flavors beautifully.

For a heartier option, add sautéed spinach or roasted tomatoes on the side.

Frequently Asked Questions