Hash Brown Breakfast Casserole

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Hash Brown Breakfast Casserole

A make-ahead baked dish with potatoes, sausage, eggs, and cheese

This baked breakfast casserole combines shredded potatoes, cooked sausage, eggs, and cheese into a single dish that can be assembled ahead of time and baked when needed. It works well for family breakfasts, guests, or occasions where advance preparation is helpful.

Prep Time: 20 minutes
Bake Time: 45–55 minutes
Optional Chill Time: Up to 24 hours
Servings: 8–10
Pan Size: 9 × 13 inch (23 × 33 cm)

Ingredients

Main Ingredients

  • 1 lb (450 g) frozen hash browns, thawed
    (shredded or diced both work)

  • 1 lb (450 g) breakfast sausage

  • 8 large eggs

  • 1½ cups milk (whole or 2%)

  • 2 cups shredded cheese
    (cheddar, Colby-Jack, or a blend)

Seasonings

  • 1 teaspoon salt

  • ½ teaspoon black pepper

  • ½ teaspoon garlic powder (optional)

  • ½ teaspoon onion powder (optional)

Optional Add-Ins

  • ½ cup chopped bell peppers

  • ¼ cup finely chopped onion

  • ½ cup cooked mushrooms

  • ¼ teaspoon paprika or dried herbs

Step-by-Step Instructions

1. Prepare the Pan

  • Lightly grease a 9×13 inch baking dish with oil or butter.

  • Set aside.

2. Cook the Sausage

  • Heat a skillet over medium heat.

  • Add the sausage and cook, breaking it into small pieces.

  • Cook until fully browned and no longer pink.

  • Drain excess fat and let cool slightly.

3. Layer the Hash Browns

  • Spread the thawed hash browns evenly across the bottom of the prepared baking dish.

  • Press lightly to form an even layer.

4. Add Sausage and Cheese

  • Sprinkle the cooked sausage evenly over the potatoes.

  • Spread 1½ cups of the shredded cheese over the sausage layer.

5. Mix the Egg Custard

  • In a large bowl, whisk together:

    • Eggs

    • Milk

    • Salt

    • Pepper

    • Optional seasonings

  • Whisk until fully blended and smooth.

6. Assemble the Casserole

  • Pour the egg mixture evenly over the layered ingredients.

  • Gently tap the dish on the counter to help the mixture settle.

  • Sprinkle the remaining ½ cup cheese evenly over the top.

7. Bake or Chill

To bake immediately:

  • Preheat oven to 350°F (175°C).

  • Bake uncovered for 45–55 minutes, until:

    • Center is set

    • Top is lightly golden

    • A knife inserted in the center comes out clean

To prepare ahead:

  • Cover tightly and refrigerate for up to 24 hours.

  • When ready to bake, remove from the refrigerator 15–20 minutes before baking.

  • Bake as directed, adding 5–10 minutes if needed.

8. Rest and Serve

  • Let the casserole rest for 10 minutes before slicing.

  • Cut into squares and serve warm.

Helpful Tips

  • Even Cooking: Thaw and drain hash browns well to avoid excess moisture.

  • Cheese Choices: A mix of sharp and mild cheese adds balanced flavor.

  • Clean Slices: Use a sharp knife and wipe between cuts.

  • Pan Depth: A deeper dish may need slightly longer baking time.

Storage

  • Refrigerate leftovers in a covered container for up to 3 days.

  • Reheat individual portions in the oven or microwave.

  • Freezing is possible, though texture may soften slightly after reheating.

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