Mexican Creamed Potatoes

Mexican Creamed Potatoes 4 large potatoes 1/4 c. butter 3/4 c. sour cream 1 Tbls. flour 1/2 pound grated jalapeno jack cheese salt and pepper to taste 1/3 c. parmesan cheese Melt butter in 1/2 quart baking dish at 400*. Peel and cube potatoes. Add to melted butter, coat. Bake uncovered for 50 minutes at 400*. In small bowl mix sour cream and flour. Add cheese, salt and pepper and potatoes. Return potato mixture to baking dish. Sprinkle with parmesan cheese. Bake uncovered for 15 minutes at 400