In large bowl, combine oats, milk, onion, egg and seasoned salt. Crumble venison and beef over mixture; mix well. Shape into 8 patties; place in greased 15x10x1-inch baking pan. In small bowl, whisk ketchup, brown sugar, Worcestershire sauce and mustard until blended. Spoon over patties. Bake, uncovered, at 350° 22 to 26 minutes or until meat juices run clear. Serve on rolls with cheese and tomato as desired.