SiliconeZone 6-Piece Heart Muffin Cup Set, Red and Pink Easy to use, fill with batter and place on baking sheet Made with FDA approved food grade silicone Oven, Dishwasher, Microwave and Freezer safe; easy clean up; no need to soak! Reduce waste you can use SiliconeZone Heart Muffun Cups again and again Non-stick coating prevents baked on food; will not retain food flavors or odors