Mix cheddar cheese, spaghetti, ham and mushrooms in greased 3-quart casserole dish. In saucepan, melt butter. Add flour and milk to butter for cream sauce. Stir slowly until thickened. Pour over ham mixture and mix well. Sprinkle with parmesan cheese and breadcrumbs. Bake at 375 degrees until mixture bubbles, approximately 30 minutes.
Preparation Time: 30 minutes
Number of Servings: 6-8