Sausage and Egg Casserole – The Ultimate Make-Ahead Breakfast!

Looking for a hearty, comforting breakfast that’s easy to prepare and perfect for feeding a crowd? This Sausage and Egg Casserole is everything you want in a morning meal — savory, satisfying, and incredibly simple to make. Packed with fluffy eggs, seasoned sausage, melty cheese, and bread cubes, it’s a cozy breakfast bake that’s ideal for weekends, holidays, or meal prep.

You can assemble it the night before and pop it in the oven in the morning for a no-stress breakfast that tastes like home. Whether you’re serving it for brunch or grabbing a slice on the go, this casserole is always a hit.

Why You’ll Love This Sausage and Egg Casserole

✅ Make-ahead friendly – Prep the night before and bake in the morning
✅ Feeds a crowd – Perfect for brunch parties or holidays
✅ Customizable – Add veggies, swap proteins, or change the cheese
✅ Hearty and satisfying – Loaded with protein and flavor

Ingredients You’ll Need

Most of these are pantry staples, and you can mix and match depending on what you have:

1 lb breakfast sausage (pork, turkey, or chicken)
6 large eggs
2 cups milk (whole or 2%)
2 cups shredded cheese (cheddar, mozzarella, pepper jack, or a blend)
4 cups cubed bread (day-old bread works best: sourdough, French, or sandwich bread)
1/2 teaspoon salt
1/4 teaspoon black pepper
1/4 teaspoon garlic powder (optional)
1/4 teaspoon onion powder (optional)
Chopped parsley or green onions, for garnish (optional)

How to Make Sausage and Egg Casserole

Step 1: Cook the Sausage

In a skillet over medium heat, cook the sausage until browned and fully cooked. Break it up into crumbles as it cooks. Drain excess fat and set aside to cool slightly.

Step 2: Prep the Bread and Cheese

Grease a 9×13-inch baking dish. Spread the bread cubes evenly in the bottom, then sprinkle cooked sausage and shredded cheese over the top.

Step 3: Mix the Egg Mixture

In a large bowl, whisk together the eggs, milk, salt, pepper, garlic powder, and onion powder until well combined.

Step 4: Assemble the Casserole

Pour the egg mixture evenly over the bread, sausage, and cheese in the baking dish. Gently press everything down with the back of a spoon to help the bread soak up the liquid.

Step 5: Chill or Bake

For Make-Ahead: Cover with foil or plastic wrap and refrigerate overnight.
For Same-Day: Let it sit for 15–20 minutes before baking to absorb the liquid.

Step 6: Bake

Preheat oven to 350°F (175°C). Bake uncovered for 45–50 minutes, or until the eggs are set and the top is golden brown. A knife inserted in the center should come out clean.

Step 7: Serve

Let the casserole rest for 5–10 minutes before slicing. Garnish with chopped parsley or green onions and enjoy!

Tips for the Best Breakfast Casserole

✅ Use dry or day-old bread – Fresh bread can get soggy. Let it sit out or toast it lightly.
✅ Cool the sausage before adding – Helps keep the eggs from scrambling prematurely.
✅ Make it your own – Add diced peppers, onions, mushrooms, or spinach
✅ Don’t overbake – Bake until just set for a fluffy, moist texture

Recipe Variations

Sausage, Egg & Veggie Casserole – Add sautéed bell peppers, onions, mushrooms, or spinach
Cheesy Bacon Casserole – Use crispy bacon or a bacon-sausage combo
Low Carb/Keto Version – Skip the bread and add more eggs, cream, and cheese
Southwestern Style – Add green chiles, pepper jack cheese, and top with salsa
Make it Dairy-Free – Use dairy-free cheese and unsweetened almond milk

What to Serve with Sausage and Egg Casserole

Fresh fruit or fruit salad
Hash browns or roasted potatoes
Biscuits or toast
A simple green salad for brunch
Coffee, tea, or fresh juice

Storage & Reheating

✅ Refrigerator – Store in an airtight container for up to 4 days
✅ Freezer – Wrap individual portions tightly and freeze for up to 2 months
✅ Reheat – Microwave individual servings or reheat in a 350°F (175°C) oven until warmed through

Frequently Asked Questions

Can I make this without bread?

Yes! For a low-carb version, simply leave out the bread and use extra eggs (around 8–10 total) with your sausage and cheese.

Can I use pre-cooked or frozen sausage?

Absolutely. Just make sure it’s fully thawed and chopped or crumbled before using.

Can I bake it right away instead of overnight?

Yes, but let the casserole sit at room temp for 15–20 minutes first so the bread has time to absorb the egg mixture.

Can I use egg whites?

Yes! You can substitute some or all of the whole eggs with egg whites or an egg substitute if desired.

Final Thoughts

This Sausage and Egg Casserole is the ultimate make-ahead breakfast — rich, filling, and easy to prepare. Whether you’re cooking for your family, hosting brunch, or planning your weekday breakfasts, this dish delivers every time.

Make it your own with your favorite add-ins and serve with something fresh on the side. One pan, minimal mess, and maximum comfort!