This Corning Glass Grab grill dish MR-1 is multi functional Use it to cook bacon in the microwave-just set it on a folded paper towel or in a larger dish when cooking to mitigate fat spillage or use in the oven-again placed in any larger dish for fat overflow. Use the reverse side to brown/toast nuts for recipes. either in the oven or in the microwave. Good vintage condition 9 x 7 MADE IN USA.