The Universal Nonstick Silicone Lid deserves its impressive sounding name; it’s really nifty! These lids are heat proof up to 675F, and can serve as a trivet for hot pots and plates. They can seal themselves to pots, pans, or bowls–even some irregularly shaped containers, so long as the lid is large enough. For a good seal, the lip of the container should be smooth.
You can use it as a splatter guard, too; just place it upside-down on the container. Use it the same way in the microwave. *Pickawicca” explains that the lid is ridged on top, so when you invert it, the ridges provide venting.
You can order them from Sur la Table.
Silicone Easy Lid