Get 1 Beef Filet Mignon per package for the perfect elegant meal. The Beef Filet Mignon Steak, also known as a beef Tenderloin steak, is best-served medium-rare to medium for the best buttery and beefy flavor. You can prepare it by seasoning it and cooking it on the grill, pan-sear in a skillet, broil, or cut for stir-fry or kabobs. Steaks range from 6-9 oz.