I just saw a video from Verusca Walker about making molds out of leftover fondant that was so interesting I thought I’d share it with you. You can see the actual video through YouTube.
Take all of your leftover fondant from previous cakes and mix them together until you have a pliable piece – you will probably end up with a grayish or taupy color; add a generous amount of Tylose because you want the mold to harden rock solid. Once you have thoroughly mixed the Tylose into the fondant, pat it on the table and cut a round or square piece using one of your cutters. The size of the cutter will depend on the size of the piece you want to mold.
You are now ready to press your piece onto the fondant to make an impression – you can leave your piece inside the mold for a few minutes, or take it out right away if you are very careful. Once you are satisfied with the impression on the mold, allow it to dry overnight. Voila, you now have a mold you can use several times.
Obviously, fondant molds will not keep like the silicone ones because they are made out of sugar, but you can get quite a few uses out of it. Verusca mentioned that refrigerator magnets make great pieces for molding because they are usually very detailed. You can also use buttons, mini-purses, scrapbooking items, wooden little figures, keys, etc.
Hope this helps, and thank you Verusca for sharing your method of making disposable fondant molds!
-- DJ - Funfetticakes