Matfer Bourgeat Silicone Silform Hamburger Bun Mold Gray 337029 Just place the shapes cut with an Exoglass cutter on the SILFORM upside down and bake on the sheet for around 15 min at 350 degrees F. A practical solution to save time SILFORM can also be used in a traditional manner on the right side, by lining the dough. Blind baking of tartlet bases becomes very easy, without having to line or poke the dough or even grease the molds. With the heat uniformly spread, the dough is in close contact with the shape and cooks perfectly. Uniformly-sized choux are obtained on account of the shape cavities adapted for each preparation.