Easy Sausage and Egg Casserole is a simple, hearty dish that combines the savory flavors of breakfast sausage and fluffy eggs into one comforting meal. With melted cheese often making an appearance on top, this casserole is a warm, filling option that’s perfect for any morning or brunch gathering.
I love making this casserole because it’s one of those dishes that feels special but doesn’t take much effort. You can prepare it ahead of time, pop it in the oven, and before you know it, the whole house smells amazing. It’s also so flexible—sometimes I throw in extra veggies like bell peppers or spinach to sneak in a little green, but it’s just as good classic.
My favorite way to serve this is right out of the oven with some fresh fruit on the side and a cup of coffee. It’s the kind of breakfast that brings everyone to the table happily without requiring a ton of time or fuss. If you’re feeding a crowd or just want a no-hassle morning meal, this casserole is a winner every time.
Key Ingredients & Substitutions
Breakfast Sausage: This adds great flavor and a meaty texture. You can use mild or spicy, depending on your taste. For a leaner option, try turkey or chicken sausage. Vegetarian sausage crumbles also work well.
Eggs: Eggs are the binder and main protein. Use large eggs for best results. For a dairy-free twist, you can use an egg substitute mix, but the texture may change slightly.
Bread: Slightly stale bread soaks up the egg mixture without getting mushy. French bread or sandwich bread both work. Gluten-free bread is a good swap if needed.
Milk: Whole or 2% milk keeps the casserole moist and tender. For a dairy-free version, unsweetened almond or oat milk are suitable substitutes.
Cheese: Cheddar adds a nice sharpness and melts beautifully. You can try mozzarella for milder flavor, or pepper jack for a spicy kick. Vegan cheese can be used as well.
How Do I Make Sure the Bread Soaks Up the Egg Mixture Without Getting Soggy?
This is key to a perfect casserole texture! Here’s how I do it:
- Use bread that’s a bit stale or dry; fresh bread might get too soft.
- Press the bread cubes firmly into the baking dish to create a compact layer.
- After mixing the eggs and milk, pour slowly and evenly over the bread and sausage.
- Let the mixture sit for about 5-10 minutes before baking so the bread absorbs the liquid well.
- Bake at 350°F for 40-45 minutes until set and golden on top—this helps form a nice crust.
Waiting to cut until the casserole cools slightly also helps it slice neatly without falling apart.
Equipment You’ll Need
- 9×9-inch baking dish – perfect size for even cooking and easy serving.
- Skillet – great for browning sausage and draining fat before adding to casserole.
- Mixing bowl – where you whisk eggs, milk, and seasonings together smoothly.
- Whisk – helps blend the eggs and milk evenly for a fluffy texture.
- Measuring cups and spoons – for accurate ingredient amounts and consistent results.
Flavor Variations & Add-Ins
- Swap sausage for cooked bacon or ham for a different savory taste.
- Mix in chopped bell peppers or spinach to add a fresh, colorful veggie boost.
- Use pepper jack cheese instead of cheddar for a little spicy kick.
- Add herbs like thyme or chives for extra flavor depth when you want something fragrant.
How to Make Easy Sausage and Egg Casserole
Ingredients You’ll Need:
Main Ingredients:
- 1 pound breakfast sausage (mild or spicy, as preferred)
- 6 large eggs
- 2 cups milk (whole or 2%)
- 6 slices bread (preferably slightly stale or cubed)
- 1 cup shredded cheddar cheese
- 1 teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon dried parsley (optional)
- ¼ teaspoon crushed red pepper flakes (optional, for a mild kick)
- Butter or cooking spray (for greasing baking dish)
How Much Time Will You Need?
This casserole takes about 15 minutes to prepare and then 40-45 minutes to bake. Allow a few minutes to let it rest before serving. So, in total, plan for roughly 1 hour from start to table.
Step-by-Step Instructions:
1. Prepare the Baking Dish and Sausage:
Preheat your oven to 350°F (175°C). Lightly grease a 9×9-inch baking dish with butter or cooking spray. Next, in a skillet over medium heat, cook the breakfast sausage until it’s browned and cooked through. Use a spoon or spatula to crumble the sausage as it cooks. Drain any excess fat, then set the sausage aside.
2. Assemble the Layers:
Arrange the bread cubes evenly in the bottom of your prepared dish. Press them down gently to make a compact base. Sprinkle the cooked sausage over the bread evenly.
3. Mix and Pour the Egg Mixture:
In a large bowl, whisk together the eggs, milk, salt, black pepper, and if you like, dried parsley and crushed red pepper flakes. Pour this mixture evenly over the bread and sausage to soak all the pieces well. Then, sprinkle the shredded cheddar cheese on top.
4. Bake and Serve:
Place the casserole in the preheated oven and bake for 40-45 minutes. You’ll know it’s done when the eggs are set and the top is a nice golden brown. Remove from oven and let it rest for a few minutes before serving to help it slice nicely. Enjoy!
Can I Use Frozen Sausage for This Casserole?
Yes! Just be sure to fully thaw the sausage before cooking it. Thaw in the fridge overnight or use the defrost setting on your microwave, then cook as directed for best results.
Can I Make This Casserole Ahead of Time?
Absolutely! Assemble the casserole the night before, cover it tightly with foil or plastic wrap, and refrigerate. Bake it fresh in the morning, adding a few extra minutes to the baking time if needed.
How Should I Store Leftovers?
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the microwave or oven until warmed through.
What Can I Substitute for Bread?
If you want to skip the bread, try cubed cooked potatoes or cooked rice for a slightly different texture. Just make sure they’re pre-cooked before adding to the casserole.