1. Heat oven to 350 degrees . Line a 10-inch spring-form pan or any round 10-inch pan with a sheet of foil and make smooth.
2. Unwrap mints. Arrange a row of mints close together around outside edge of foil-lined pan. Add rows of mints until foil is covered.
3. Bake at 350 degrees until mints spread together and melt, 10 to 13 minutes. Transfer pan to a wire rack to cool completely. Remove candy plate from pan using foil and gently peel candy from foil.
4. Store in an airtight container or on countertop up to 2 weeks. (Place plate on a flat platter or you risk breaking the candy.)