Bake for 8 to 10 minutes in the preheated oven, be careful not to overbake. When cookies come out of the oven, Press one mint wafer into the top of each cookie and let sit for 1 minute. When the mint is softened, swirl with the back of a spoon or toothpick to make a pattern with the green filling of the mint wafer. For smaller cookies, break mints in half.