Sausage and Egg Casserole is a hearty, comforting dish that combines fluffy eggs, savory sausage, and melty cheese all baked together into a golden, satisfying meal. It’s a great way to start the day or even serve for brunch when you want something filling but easy to prepare ahead of time.
I love making this casserole because it’s so simple to throw together, and it always pleases a crowd. The sausage adds a nice spicy kick and a bit of texture, while the eggs keep it soft and fluffy. Sometimes, I like to add a handful of chopped veggies like bell peppers or spinach to sneak in some extra color and flavor. It’s one of those recipes that’s forgiving—feel free to experiment with what you have on hand.
My favorite way to enjoy this casserole is straight out of the oven with a slice of buttered toast or some fresh fruit on the side. It’s perfect for lazy weekends or when I have friends over for brunch. Plus, it makes great leftovers, so I usually have a slice or two for a quick breakfast during busy weekday mornings.
Key Ingredients & Substitutions
Breakfast sausage: This brings a rich and savory flavor. If you want less fat or pork-free options, try turkey sausage or plant-based sausage crumbles. Keep in mind, leaner options may be a bit drier.
Eggs: Eggs make the base soft and fluffy. For a lighter version, swap half the eggs with egg whites or use a mixture of whole eggs and egg substitute.
Potatoes: I prefer diced cooked potatoes for texture. You can use frozen hash browns or roasted potatoes. Sweet potatoes work well too for a slightly sweet twist.
Cheddar cheese: Sharp cheddar melts beautifully here. If you want a milder taste, use mozzarella or Monterey Jack. For dairy-free, vegan cheese alternatives are a good choice.
Bell peppers and onions (optional): These add freshness and a slight crunch. Feel free to substitute with other veggies like spinach, mushrooms, or tomatoes for extra color and nutrients.
How Do You Make Sure the Casserole Is Cooked Perfectly?
Getting the right texture and doneness matters a lot. Here are some tips:
- Grease your baking dish well to prevent sticking.
- Cook the sausage fully and drain the fat to avoid a greasy casserole.
- Mix eggs and milk thoroughly for even texture.
- After pouring the mix, spread it evenly in the dish for even baking.
- Bake at 375°F (190°C) for 35-45 mins until set and golden. Don’t rush it; check with a knife—the center should come out clean when done.
- Let it rest 5-10 mins before cutting, so it firms up and slices nicely.
My personal tip: Keep an eye on the casserole in the last 10 minutes to avoid over-baking and drying out the eggs. A bit of softness inside is perfect!
Equipment You’ll Need
- 9×13 inch baking dish – I use this size because it fits the casserole perfectly and cooks evenly.
- Skillet – for cooking the sausage; a non-stick or cast-iron skillet works well.
- Whisk or fork – useful for beating the eggs and mixing everything smoothly.
- Measuring cups and spoons – to measure ingredients accurately.
- Mixing bowl – to combine eggs, milk, and seasonings before pouring into the dish.
Flavor Variations & Add-Ins
- Use cooked ground beef or turkey instead of sausage for a different flavor profile or lower fat content.
- Add shredded mozzarella or pepper jack cheese for a spicy twist.
- Mix in sautéed vegetables like spinach, mushrooms, or chopped tomatoes for extra color and nutrients.
- Sprinkle chopped fresh herbs like parsley or chives on top before serving for added freshness.
How to Make Sausage and Egg Casserole
Ingredients You’ll Need:
- 1 lb (450g) breakfast sausage, crumbled and cooked
- 8 large eggs
- 1 cup milk (whole or 2%)
- 3 cups diced cooked potatoes (home-cooked or store-bought hash browns)
- 1 cup shredded cheddar cheese
- ½ cup diced bell peppers (optional)
- ¼ cup diced onions (optional)
- Salt and black pepper to taste
- 1 tbsp butter or oil (to grease the casserole dish)
- Fresh herbs (like parsley or chives) for garnish
How Much Time Will You Need?
This casserole takes about 15 minutes to prep and another 35-45 minutes to bake. Plus, you’ll want to let it rest about 5-10 minutes after baking before slicing. All in all, you’ll have a delicious meal ready in around an hour!
Step-by-Step Instructions:
1. Prepare and Cook the Sausage:
Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish with butter or oil. Next, cook the sausage in a skillet over medium heat, breaking it into crumbles as it browns. Cook until it’s no longer pink. Drain off any extra grease and set the sausage aside.
2. Mix the Eggs and Ingredients:
In a large bowl, whisk together the eggs, milk, salt, and pepper until smooth. Then add the cooked potatoes, browned sausage, shredded cheddar cheese, and, if you like, the diced bell peppers and onions. Stir everything gently to combine.
3. Assemble and Bake:
Pour the egg and sausage mixture evenly into your greased baking dish. Place the dish into your preheated oven, and bake for 35-45 minutes or until the casserole is set and the top is golden brown. Check doneness by placing a knife in the center; it should come out clean.
4. Rest, Slice, and Serve:
Once baked, let the casserole rest for 5-10 minutes. This helps it set and makes slicing easier. Garnish with fresh herbs before serving. Enjoy warm!
This tasty casserole goes great with a side of toast or a fresh green salad for a satisfying breakfast or brunch treat.
Can I Use Frozen Sausage for This Casserole?
Yes! Just make sure to fully thaw the sausage before cooking. Thaw it overnight in the fridge or quickly under cold running water in a sealed bag. Cook thoroughly before adding to the casserole.
How Can I Make This Recipe Vegetarian?
Swap the sausage with plant-based sausage crumbles or cooked vegetables like mushrooms and spinach. You might want to add extra seasoning to boost the flavor.
Can I Prepare This Casserole Ahead of Time?
Absolutely! Assemble the casserole the night before, cover it tightly, and refrigerate. When ready, bake it directly from the fridge; you might need to add a few extra minutes to the baking time.
How Should I Store Leftovers?
Keep leftovers in an airtight container in the fridge for up to 3 days. Reheat in the microwave or oven until warmed through. For best texture, add a splash of milk when reheating.
