First I baked a yellow cake... let it cool for about 20 min then crumbled the cake into a large bowl. Add about 3/4 container of white buttercream frosting to the crumbled cake.. I used a fork to stir this just until it came together. Covered with cling wrap and into the frig to cool over night. I have read a 6 hrs.. but I wanted to be on the safe side... The next day I scooped the mixture out and made about 30 bite-size balls.... on wax paper and right into the freezer for several hours.. after they were frozen I melted some candy coating in a double broiler and coated the cake balls. They turned out great! My family loved them!!