Oatmeal Meatloaf Oatmeal Meatloaf 6-8 servings Heat oven to 3500F.  Combine all ingredients in large bowl; mix lightly but thoroughly.  Bake 50-55 minutes or until meatloaf is to medium doneness (1600F for beef, 1700F for turkey), until not pink in centre and juices show no pink colour.  Let stand 5 minutes before slicing.