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I bake a lot bread so I wanted a baking mat that will survive high oven temperatures in a dutch oven and would easily separate from the bread, not like parchment paper. I read a few reviews about mats smoking in the oven, so I placed the mats on a cookie sheet in a 480 deg F oven for one hour. They smoked up the kitchen for about half an hour with some pretty awful smelling smoke and then gradually they stopped smoking. The mats survived fine at this temperature, so I suggest that you pre-bake them in the oven before use. I also cut them with a scissors to fit into my proofing bread basket. The bread baked fine on the mats with no sticking and no burned crust. So no need to use any more parchment paper. I would give them 5 stars if they didn't smoke first time in the oven. I'm curious why the vendor doesn't bake them after the manufacturing process and before shipment to customers?
They work great for non stick. We made cinnamon rolls from scratch and they came right off, but there was a funny smell. So I washed and dryed them and put them back in the oven for about 15 minutes. I could smell them and it wasn't pleasant. Then when I opened the oven, this stinky cloud came out. I'm returning them!
I used these twice and both times, they came out of the oven smoking, which in turn set my smoke alarm off. Because of the smoke, I would also have concern of chemicals leaching into my food. I gave two stars because despite the above, they are indeed non-stick, wash easily, and fit my baking sheets perfectly. However, due to their reaction in my oven, I have chosen not to continue using them and will switch back to parchment paper.
These are fantastic! I have heard good things about reusable baking mats, but was skeptical if they really worked and if they would cause the bottoms of food to be soggy. Thankfully, they work wonderfully. I used them for the first time to make cinnamon rolls and they were honestly the best cinnamon rolls I have ever made. Usually the bottoms are always burnt by the time the top portion is cooked, no matter what I have used. These mats allowed everything to cook uniformly with no burnt or soggy bottoms. Very pleased and very happy to find something reusable that works.
Recently purchased these, but am returning. Did not perform as expected, as grease from cookies went through the mat, so I needed to wash the top of the mat, bottom of the mat, and also the pan. This is my first experience with silicone baking mats, but consulted with friends to understand they should not be porous, and should only require a wipe down after use (and not both sides).
Edited 11 October 2019: I've thrown one away because it just was too difficult to clean. The other one is on probation. I'd only recommend these for non-greasy foods. If you cook anything greasy on them, like baked chicken wings, they are ridiculously hard to clean. Try as I might, I scrub the heck out of these things, wipe them dry, and later, when I pull them out of the drawer to use again, they're slimy and greasy feeling. I'm not sure but at this point I'm thinking about going back to the nonstick aluminum foil.
These are great for baking. As long as I'm not cooking anything too oily or greasy, I use them all the time. Keeps me from using a lot of aluminum foil and keeps the pan underneath from getting too dirty. Anything really greasy will cause grease to leak through so keep that in mind.
Cleanup is easy. You do have to wash them with soap, though, and not just rinse them off.