Roasted potatoes with ham, onion, and seasonings make a fabulous one-dish, everyday meal. HEAT oven to 350 degrees. Place the dish back in the oven for about 5-7 more minutes – just so that the delicious topping can turn golden brown – and your Cheesy Ham and Potato Casserole is done! https://www.allrecipes.com/recipe/229370/cheesy-ham-potato-bake When the potatoes are just fork-tender, you’ll stir in the package of diced ham and finish the top of the casserole with buttered cracker crumbs. STIR in flour and pepper. COOK onion and green pepper in margarine until tender. ADD milk and bring to a boil, stirring constantly. DIRECTIONS. The recipe is simple, takes very little time to prepare and cook, and is an excellent way to use leftover ham.