🧀 Cheesy Amish Breakfast Casserole

This Cheesy Amish Breakfast Casserole is the ultimate hearty breakfast bake, loaded with savory sausage, crispy-tender hash browns, fluffy eggs, and plenty of gooey melted cheese.

The best part? You can assemble it the night before, refrigerate it overnight, and simply pop it into the oven the next morning. It’s an easy, comforting family favorite that’s perfect for weekends, Christmas morning, brunches, potlucks, and special occasions.

Recipe Information

• Prep Time: 20 minutes
• Chill Time: 8 hours or overnight
• Bake Time: 45–55 minutes
• Total Time: About 9 hours
• Servings: 10–12
• Difficulty: Easy
• Method: Oven-baked
• Pan: 9 × 13-inch (23 × 33 cm) baking dish

Ingredients

For the Breakfast Casserole

• 1 lb (450 g) breakfast sausage
• 6 large eggs
• 2 cups (480 ml) whole milk
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 teaspoon garlic powder
• ½ teaspoon onion powder
• 2 lb (900 g) frozen shredded hash browns, thawed
• 2 cups (200 g) shredded cheddar cheese
• 1 cup (100 g) shredded Monterey Jack cheese
• ½ cup (50 g) shredded Swiss cheese
• 1 small onion, finely diced
• 1 small green bell pepper, diced, optional
• 2 tablespoons butter or cooking oil, for sautéing and greasing

Optional Toppings

• Extra shredded cheddar cheese
• Chopped green onions
• Fresh parsley
• Cooked, crumbled bacon
• Diced jalapeños
• A spoonful of sour cream when serving

Instructions

1. Brown the Sausage

Place a large skillet over medium heat.

Add the breakfast sausage and cook for about 7–9 minutes, breaking it apart with a spatula as it cooks, until browned and fully cooked.

Drain off any excess grease.

Transfer the sausage to a plate and set aside.

2. Sauté the Vegetables

Using the same skillet, add the diced onion and bell pepper, if using.

Cook for 3–4 minutes, stirring occasionally, until the vegetables begin to soften.

Remove from the heat.

3. Prepare the Egg Mixture

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

Whisk until the eggs are completely blended and the mixture is smooth.

4. Prepare the Baking Dish

Lightly grease a 9 × 13-inch baking dish with butter or cooking spray.

Spread the thawed hash browns evenly across the bottom of the dish.

Season them lightly with a pinch of salt and pepper.

5. Add the Sausage and Vegetables

Scatter the cooked sausage evenly over the hash browns.

Add the sautéed onion and bell pepper.

Spread everything into an even layer.

6. Add Plenty of Cheese

Sprinkle the cheddar, Monterey Jack, and Swiss cheeses evenly over the sausage and hash brown mixture.

Don’t be shy with the cheese—it’s what gives this casserole its rich, gooey, irresistible finish.

7. Pour Over the Egg Mixture

Slowly pour the seasoned egg mixture evenly over the entire casserole.

Gently press down on the ingredients with a spatula if necessary so the egg mixture can settle into the hash browns.

8. Refrigerate Overnight

Cover the baking dish tightly with plastic wrap or aluminum foil.

Refrigerate for at least 6 hours or overnight.

This allows the flavors to meld and gives the eggs time to soak into the hash brown layer.

9. Bring to Room Temperature

The next morning, remove the casserole from the refrigerator.

Let it sit at room temperature for about 20–30 minutes while the oven preheats.

This helps the casserole bake more evenly.

10. Bake

Preheat the oven to 350°F (175°C).

Remove the plastic wrap and cover the dish loosely with aluminum foil.

Bake for 30 minutes.

Remove the foil and continue baking for another 15–25 minutes, or until the center is completely set and the cheese is bubbling and golden.

The casserole is done when the eggs are no longer runny in the center and the internal temperature reaches about 160°F (71°C).

11. Rest Before Serving

Remove the casserole from the oven and let it rest for 10 minutes.

This allows the eggs and cheese to finish setting and makes the casserole much easier to slice.

12. Garnish and Serve

Sprinkle with chopped green onions or fresh parsley.

Slice into squares and serve warm with your favorite breakfast sides.

Chef’s Tips

• Thaw the hash browns: Frozen hash browns can release excess water and make the casserole soggy.
• Cook the sausage first: Browning the sausage adds much more flavor than adding it raw.
• Use freshly shredded cheese: It generally melts more smoothly than pre-shredded cheese.
• Don’t skip the resting time: Letting the baked casserole sit makes for cleaner slices.
• Check the center: The edges may look finished before the middle is fully set.
• For extra crispy hash browns: Spread them on a baking sheet and roast at 400°F (200°C) for 10–15 minutes before assembling.

Easy Variations

Bacon & Sausage

Use half sausage and half cooked crumbled bacon for an extra-loaded breakfast casserole.

Ham & Cheese

Replace the sausage with 2 cups diced cooked ham and add a little extra cheddar.

Spicy Breakfast Casserole

Use hot breakfast sausage and add diced jalapeños or a pinch of crushed red pepper flakes.

Veggie Loaded

Add mushrooms, spinach, tomatoes, bell peppers, or broccoli for a vegetable-packed version.

Extra Cheesy

Add another 1 cup of shredded cheese over the top during the final 15 minutes of baking.

Make-Ahead Instructions

This casserole is specifically designed to be made ahead.

Assemble the entire dish the night before, cover tightly, and refrigerate overnight.

The next morning, let it stand at room temperature for 20–30 minutes, then bake as directed.

For best results, bake within 24 hours of assembling.

Storage

Cool leftover casserole completely before transferring it to an airtight container.

Refrigerate for up to 4 days.

Reheat individual portions in the microwave for 1–2 minutes, or warm larger portions in a 325°F (165°C) oven until heated through.

Freezing

The baked casserole can also be frozen.

Cool completely, cut into individual portions, and wrap tightly before placing in a freezer-safe container.

Freeze for up to 2 months.

Thaw overnight in the refrigerator and reheat until hot throughout.

What to Serve With It

Make breakfast extra special with:

• Fresh fruit
• Sliced melon or berries
• Buttermilk biscuits
• Toast
• Croissants
• Freshly brewed coffee
• Orange juice
• Fruit salad

Final Result

A wonderfully cheesy, savory, hearty breakfast casserole with layers of seasoned hash browns, browned sausage, tender eggs, and plenty of melty cheese. Assemble it the night before, bake it in the morning, and enjoy a hot, satisfying breakfast without the morning rush.