Dishwasher-, microwave-, freezer-safe, and oven safe to 500Â°F. Nonporous glazed interior. Extra-wide handle holes allow a good grip from any angle. Individual molten lava cakes or French onion soup are just the start of what you can create in the Rachael Ray Stoneware Bubble & Brown Square Singles 4-Piece Set of 10 ounce Ramekins in Assorted Colors. This collection of four stoneware pieces is dishwasher-, microwave-, and freezer-safe and can withstand oven temperatures up to 500 degrees! Built-in handles make them easy to handle and the non-porous glaze in four individual colors makes them fun.