Silicone baking mats are reusable, have an eco-friendly design, and create an even baking surface on even your oldest, rustiest cookie sheets. The downside is the hassle of cleaning up the surface when there's something messy and gooey or burnt on the surface — but there’s a trick that makes cleaning your baking mat a snap.

For regular cleaning of your silicone baking mat, simply wipe it clean with a mild dish soap and warm water (or a gentler lemon juice and baking soda mix). However, after several uses, you may notice sticky residue building up, and the best way to deal with this is to leave your mat in an oven heated to 450 degrees Fahrenheit.

Set your baking mat on a wire cooling rack that is placed on top of a cookie sheet, then leave it in the heated oven for about an hour. After the time is up, carefully move the mat to your sink and clean it with soap as usual, and the heat treatment should make it easy to get rid of burnt, stuck-on food and greasy or sticky residue.