Scalloped Potatoes with Cheese

1/2 cup butter
1/2 cup flour
1 quart milk
6 cups cooked potatoes, diced
1/4 cup chopped pimento
1/4 cup chopped fresh parsley
1/2 cup finely chopped onion
1 tablespoon salt
1 cup shredded sharp Cheddar cheese
1 cup buttered bread crumbs
1/2 teaspoon paprika

Directions:
Melt butter in a heavy saucepan over low heat. Stir in flour gradually and cook until bubbly, stirring constantly. Add milk gradually and cook until thickened, stirring constantly. Stir in potatoes, parsley, pimento, onion, and salt. Spoon into a lightly-greased 3 quart casserole. Combine cheese, bread crumbs, and paprika. Sprinkle over potato mixture. Bake at 400° 30-35 minutes or until topping is browned and potato mixture is bubbling. Serves 8 to 10.