Breakfast Casserole (Easy Make-Ahead Breakfast Casserole with Sausage, Eggs & Hash Browns)

Start your morning with this hearty, comforting breakfast casserole with sausage, eggs, cheese, and hash browns — a classic make-ahead breakfast that’s perfect for feeding a crowd. This easy breakfast casserole is rich, satisfying, and packed with flavor, making it ideal for weekend brunch, holiday mornings, or meal prep.

If you love cozy breakfast favorites, pair this with Fluffy Pancakes, Breakfast Burritos, or explore more ideas in your Breakfast Recipes collection. This make-ahead egg casserole fits perfectly into any breakfast rotation when you want something warm, filling, and stress-free.

Why You’ll Love This

• Easy make-ahead breakfast casserole for busy mornings

• Hearty, protein-packed with eggs, sausage, and cheese

• Perfect for holidays, brunch, or meal prep

• Feeds a crowd with minimal effort

• Customizable with vegetables, meats, or cheeses

Recipe Card

• Servings: 8

• Prep Time: 15 minutes

• Cook Time: 45 minutes

• Total Time: 1 hour

Nutrition Information

(per serving, estimated)

• Calories: 420 kcal

• Protein: 22 g

• Carbohydrates: 28 g

• Fat: 25 g

• Fiber: 2 g

• Sugar: 3 g

• Sodium: 620 mg

Ingredients

• 1 lb (450 g) breakfast sausage (or bacon), cooked and crumbled

• 6 large eggs

• 2 cups (200 g) shredded cheddar cheese

• 1 (20 oz / 570 g) bag frozen hash browns, thawed

• 1 cup (240 ml) milk

• ½ cup (75 g) diced onion (optional)

• ½ cup (75 g) chopped bell pepper (optional)

• ½ teaspoon salt

• ¼ teaspoon black pepper

• ¼ teaspoon garlic powder

Instructions

1. Preheat Oven: Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.

2. Cook the Sausage: In a skillet over medium heat, cook the sausage until browned. Drain excess grease and set aside.

3. Assemble the Casserole: Spread hash browns evenly in the dish. Add sausage, then half the cheese. Sprinkle onions and peppers if using.

4. Make Egg Mixture: Whisk eggs, milk, salt, pepper, and garlic powder in a bowl. Pour evenly over the casserole.

5. Top and Bake: Add remaining cheese. Bake uncovered for 40–45 minutes, until eggs are set and the top is golden.

6. Serve: Let rest 5 minutes before slicing. Serve warm.

Tips & Variations

• Assemble the night before and refrigerate overnight

• Use bacon, ham, or turkey sausage for variation

• Add spinach, mushrooms, or zucchini for extra veggies

• Swap cheddar for pepper jack for a spicy kick

• Add hot sauce or salsa for extra flavor

Make-Ahead & Storage

• Make-Ahead: Assemble up to 24 hours in advance and refrigerate

• Refrigerate: Store leftovers up to 4 days in an airtight container

• Freeze: Freeze baked or unbaked for up to 2 months

• Reheat: Warm in oven at 350°F or microwave individual portions

FAQ

Can I make breakfast casserole ahead of time?

Yes — this is one of the best overnight breakfast casseroles. Assemble and refrigerate, then bake fresh in the morning.

Can I freeze breakfast casserole?

Yes — freeze before or after baking. Thaw overnight for the best texture.

What meat works best?

Sausage, bacon, ham, or a combination all work well.

Can I make it vegetarian?

Yes — skip the meat and add more vegetables like spinach, mushrooms, or peppers.

Why is my casserole watery?

Too many vegetables or underbaking can cause excess moisture. Be sure to cook fully and drain veggies well.

Final Thoughts

This easy breakfast casserole with sausage, eggs, and hash browns is the kind of recipe that makes mornings feel effortless and comforting. It’s simple, reliable, and perfect for everything from holiday brunch to weekly meal prep.

Serve it alongside fresh fruit, toast, or your favorite breakfast sides, and you’ll have a warm, satisfying meal that brings everyone to the table.