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Potatoes Au Gratin and Ham - Recipe

This rich and creamy au gratin potato casserole uses leftover ham to make the perfect comfort food. Cheddar cheese is added for a finishing touch to this leftover ham recipe. For a similar leftover ham recipe, see our Scalloped Potatoes and Ham recipe.
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Potatoes Au Gratin and Ham Recipe
  • Preheat oven to 350° F. Grease baking dish.
  • Layer 1/3 sliced potatoes, 1/3 chopped ham, 1/3 onions in the pan. Repeat layers, ending with sliced potatoes on top.
  • In a sauce pan over medium heat, warm milk (do not boil). In a separate sauce pan melt butter and slowly stir in flour. Cook for 2 minutes, stirring constantly. Add warmed milk to the butter and flour mixture and continue to cook for 4 to 5 minutes while continuing to stir until thickened.
  • Remove from heat, stir in shredded cheese, mustard, paprika, and black pepper. (Return to low heat if cheese does not melt.)   Then, pour cheese sauce over layered potatoes.
  • Bake uncovered for 1 hour or until potatoes are soft and top layer is golden brown.
Prep Time: 30 minutes
Cook Time: 1 hour
Container: 3 quart casserole
Servings: 12
-2 cups cooked ham, cubed
-3 pounds baking potatoes, peeled and sliced thin (approximately 9 med. potatoes)
-1/2 cup onion, finely chopped
-2 1/2 cups whole milk
-1/4 cup butter
-5 tablespoons flour
-12 ounces extra sharp cheddar cheese, shredded
-2 tablespoons spicy brown mustard
-1 teaspoon paprika
- salt and pepper to taste