I used to either butterfly or cut into medallions, but anymore usually cook as small roasts and slice afterwards as New 2 99s posted. Salt, pepper and garlic are all that's needed but I do use other rubs at times. I like a little smoke flavor so start with the pellet grill on low temp for 20-30 minutes and do a finish sear on either a hot grill or in a cast iron pan with butter. I've been getting better results reverse searing in the cast iron pan than on the grill - doesn't seem to dry out as much.