1. Place frozen lobster tails in a shallow, 1 1/2-quart, heat- resistant, non-metallic baking dish. Face meatiest part of lobster tails toward the outside of the dish. 2. To thaw lobster tails heat, uncovered, in Microwave Oven 3 1/2 minutes. Let stand at room temperature 10 minutes. 3. With a sharp, heavy knife, open shell on underside of tail and brush with melted butter. 4. Heat, uncovered, in Microwave Oven 7 minutes or until lobster flesh is opaque and the shells are red.