The cake pans are made by Wilton. The mini cakes are always a big hit, so I've been adding more of the mini pans. It's best to find them on clearance after the holiday. Fill the cake pan 3/4 full with chocolate cake batter.
You can level off the cakes by slicing across the tops with a sharp serrated knife.
Place candies for the buttons while the frosting is still wet:
For the snowmen, I melted vanilla frosting and poured over the top: