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Easy Overnight Egg and Hash Brown Casserole Recipe with Leftover Ham for Perfect Breakfast

overnight egg and hash brown casserole - featured image

A simple, forgiving overnight casserole combining eggs, crispy hash browns, and leftover ham for a comforting and easy breakfast. Prep the night before and bake in the morning for a delicious, crowd-pleasing meal.

Ingredients

Scale
  • 4 cups (600g) frozen shredded hash browns
  • 2 cups (300g) diced leftover ham
  • 8 large eggs, room temperature
  • 1 ½ cups (360ml) whole milk
  • 2 cups (200g) shredded cheddar cheese
  • 1 teaspoon onion powder
  • ½ teaspoon garlic powder
  • Salt to taste (start with 1 teaspoon)
  • Black pepper to taste (start with ½ teaspoon)
  • 2 tablespoons fresh chives or parsley, chopped (optional)

Instructions

  1. Lightly grease a 9×13-inch baking dish with butter or nonstick spray.
  2. In a large mixing bowl, whisk together 8 large eggs and 1 ½ cups (360 ml) whole milk until smooth and slightly frothy.
  3. Stir in 1 teaspoon onion powder, ½ teaspoon garlic powder, salt, and pepper. Adjust seasoning to taste.
  4. Fold in 4 cups (600 g) frozen hash browns, 2 cups (300 g) diced leftover ham, and 2 cups (200 g) shredded cheddar cheese until evenly combined.
  5. Pour the mixture into the prepared baking dish and spread evenly without compressing.
  6. Cover tightly with plastic wrap or aluminum foil and refrigerate for at least 8 hours or overnight.
  7. Preheat oven to 350°F (175°C). Remove cover and bake uncovered for 45-55 minutes until the top is golden brown and the center is set (toothpick should come out clean).
  8. Let the casserole rest for about 5 minutes before slicing.
  9. Sprinkle chopped fresh chives or parsley on top if desired and serve warm.

Notes

Use frozen hash browns straight from the bag to avoid sogginess. Let eggs and milk come to room temperature before mixing for better texture. Do not overmix to maintain texture contrast. Cover tightly overnight to prevent fridge odors. Adjust baking time based on your oven and tent with foil if browning too fast. For extra crunch, add panko mixed with melted butter on top during last 10 minutes of baking.

Nutrition

Keywords: overnight casserole, egg casserole, hash brown casserole, leftover ham recipe, easy breakfast, make ahead breakfast, brunch recipe