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A golden brown casserole dish filled with sliced potatoes and diced ham in a creamy white sauce.

Scalloped Potatoes and Ham

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Prep Time 20 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 35 minutes
Servings 6 servings
Calories 425 kcal

Ingredients
  

  • 3 lbs Russet potatoes, peeled and sliced 1/8-inch thick
  • 2 cups cooked ham, diced
  • 1/4 cup unsalted butter
  • 1/4 cup all -purpose flour
  • 3 cups whole milk
  • 1/2 cup yellow onion, finely minced
  • 1 teaspoon sal t
  • 1/2 teaspoon ground black pepper
  • 1/2 teaspoon onion powder
  • 1/4 teaspoon garlic powder

Instructions
 

  • Preheat oven to 375°F (190°C) and grease a 9x13 inch baking dish.
  • In a medium saucepan, melt butter over medium heat. Whisk in flour and cook for 2 minutes to create a roux without browning.
  • Slowly whisk in the milk, salt, black pepper, onion powder, and garlic powder. Continue whisking until the sauce reaches a simmer and thickens.
  • Layer half of the sliced potatoes in the bottom of the prepared baking dish.
  • Top the potato layer with all of the minced onions and half of the diced ham.
  • Arrange the remaining potatoes over the ham layer and top with the remaining diced ham.
  • Pour the thickened white sauce evenly over the contents of the dish, ensuring the sauce penetrates between the layers.
  • Cover the dish tightly with aluminum foil and bake for 45 minutes.
  • Remove the foil and bake for an additional 30 minutes until the potatoes are tender when pierced with a fork and the top is golden brown.
  • Allow the dish to rest for 10 minutes at room temperature before serving to set the sauce.