Make-Ahead Sausage Casserole: The Ultimate Breakfast (or Dinner!) Bake

 

Fluffy eggs, savory sausage, melty cheese, and golden bread—all baked into one hearty, comforting dish! This easy make-ahead casserole is perfect for holiday brunches, busy mornings, or cozy dinners. Just assemble the night before, pop it in the oven, and wake up to a hot, delicious meal with zero morning stress.

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Why You’ll Love This Sausage Casserole

✅ Prep ahead – Assemble the night before, bake in the morning!
✅ Feeds a crowd – Great for holidays, potlucks, or meal prep.
✅ Customizable – Add veggies, swap meats, or make it spicy.
✅ Freezer-friendly – Bake now, reheat later!

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Make-Ahead Sausage Casserole Recipe

Ingredients

• 1 lb breakfast sausage (or Italian sausage), cooked & crumbled

• 6 cups cubed bread (French, sourdough, or brioche)

• 2 cups shredded cheddar cheese

• 8 large eggs

• 2 cups milk (or half-and-half for extra richness)

• 1 tsp mustard powder

• 1 tsp salt

• ½ tsp black pepper

• ½ tsp garlic powder

• Optional add-ins: Diced bell peppers, spinach, mushrooms, or jalapeños

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Step-by-Step Instructions

1. Prep the Base

• Grease a 9x13-inch baking dish.

• Layer bread cubes, cooked sausage, and cheese (and any veggies).

2. Make the Egg Mixture

• Whisk eggs, milk, mustard powder, salt, pepper, and garlic powder.

• Pour evenly over the bread mixture.

3. Refrigerate Overnight (or bake now!)

• Cover and chill at least 4 hours (or overnight) to let bread soak up the custard.

4. Bake & Serve

• Preheat oven to 350°F (175°C).

• Bake 45-55 mins, until golden and set in the center.

• Let rest 5-10 mins before slicing.

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Pro Tips for the Best Casserole

🔥 Extra crispy top? Sprinkle with extra cheese before baking.
🍞 Bread tip? Stale bread absorbs custard better!
🌶 Spicy kick? Use hot sausage or add cayenne pepper.
🧊 Freezer option? Bake, cool, then freeze. Reheat at 350°F (175°C) for 20-30 mins.

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Serving Suggestions

🍅 Brunch spread – Serve with fresh fruit, hash browns, or mimosas.
🥗 Dinner side – Pair with a green salad or roasted veggies.
🥑 Tex-Mex twist – Top with salsa, avocado, and sour cream.

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Final Thoughts

This Make-Ahead Sausage Casserole is a lifesaver for busy mornings—cheesy, hearty, and always a hit. Will you try it for Christmas morning or meal prep? Let us know in the comments!