1) Make sure that the scallops are not wet. Any extra moisture will keep your scallops from searing nicely and can make them rubbery. Use paper towels to help soak up any extra moisture from the scallops before cooking. 2) Cook the scallops at a high temperature, 425° and finish it under the broiler for a final crisping. 3) Brush the scallops lightly with olive oil before placing them in the oven.