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Cheesy ham potato casserole baked until golden with diced ham, melted cheddar, and fresh chives.
Hannah Cooking

Cheesy Ham Potato Casserole

A comforting cheesy ham potato casserole made with tender sliced potatoes, leftover ham, and creamy homemade cheese sauce. The perfect way to transform holiday leftovers into a cozy, family-approved dinner.
Prep Time 20 minutes
Cook Time 1 hour 15 minutes
Rest Time 10 minutes
Total Time 1 hour 45 minutes
Servings: 8 servings
Course: Casserole, Dinner, Main Course
Cuisine: American
Calories: 510

Ingredients
  

For the Casserole
  • 3 lbs Russet potatoes Sliced ¼-inch thick
  • 3 cups Cooked ham Diced
  • 1 small Onion Diced
  • 3 cups Cheddar cheese Shredded, divided
  • 0.5 cup Mozzarella cheese Shredded
  • 2 tablespoon Butter For greasing dish
  • Salt & pepper To taste
For the Cheese Sauce
  • 4 tablespoon Butter
  • 4 tablespoon Flour All-purpose
  • 3 cups Milk Whole preferred
  • 1 teaspoon Dijon mustard Flavor enhancer
  • 1 teaspoon Garlic powder
  • 0.5 teaspoon Onion powder
  • 0.5 teaspoon Salt Adjust to taste
  • 0.25 teaspoon Black pepper
  • 0.25 teaspoon Paprika Adds color + flavor
For Topping
  • 0.5 cup Cheddar cheese Final topping
  • 2 Parsley Fresh, chopped
  • 2 Green onions Sliced

Equipment

  • 9x13 baking dish Grease well with butter
  • Medium saucepan For cheese sauce
  • Whisk Prevents sauce lumps
  • Mandoline or sharp knife For uniform potato slices
  • Mixing Spoon For layering and serving
  • Aluminum foil For covering during baking

Method
 

  1. Melt butter, whisk in flour, add milk, thicken, season, stir in cheese.
  2. Peel and slice uniformly; pat dry.
  3. Add first layer of potatoes, ham, onion, cheese sauce, cheddar.
  4. Add remaining potatoes, ham, sauce, cheeses.
  5. Cover with foil; bake 60 minutes at 350°F.
  6. Remove foil; top with cheddar.
  7. Brown cheese 15 minutes.
  8. Let stand 10 minutes.
  9. Top with parsley + green onions.
    Golden baked cheesy ham potato casserole topped with melted cheddar and diced ham.

Notes

This recipe is great for using up leftover ham and can be prepped ahead. Feel free to swap cheeses or use different herbs for variation.