Stir potatoes on sheet pan, making room for asparagus and steak. Add asparagus to pan. In same pie plate, mix 2 tablespoons of the melted butter and the grill seasoning; add steak, and turn to coat. Add steak to pan, and pour any remaining butter mixture from pie plate over steak; roast 9 minutes. Remove pan from oven. Set oven control to broil. Turn steak.