Silicone baking mats can be used in just about any normal gs or electric oven， you place it into your baking tray as a liner instead of parchment paper and then place your foods on top of the mat and bake as normal. The special silicone and glass-fiber design is totally non-stick and very easy to clean.    
The mats are safe to use up to temperatures of 450 degrees F， so you can use them when baking cakes， cookies， flapjack anything really! The mat will heat your food evenly unlike some traditional trays which can have hot and cool spots， so you will get a much more even bake using a silpat mat， and because it is non-stick there is no need to grease!  
What else can I use a Silpat Mat for?
Silpat Mats are also very handy for using when you are rolling dough or other sticky mixtures. Becasue the mat is non stick it is much easier than using greased paper or a worktop/board.  
Silpat mats are much easier to clean too so you should consider using one whenever you are working with a sticky mixture， in or out of the oven!