Peppermint Serving Trays! Preheat 350. Arrange mints on lined cookie sheet. Bake until just melted, about 9-10 min. Let cool completely and store at room temperature, covered.The candies after melting. You can give them a texture while they’re still warm. For candy ornament, check after 2-3 min. Spray the tip of a skewer and poke a hole in the top of the candy cane right after it comes out of the oven if you want to hang it on the tree.