Remove cakes from oven and cool on wire racks for approx 15 minutes. Remove cakes from pan and place on wire racks, tops facing up, to cool completely.
While the cake cools, start working on the frosting. Simply add your butter, confectioner’s sugar, vanilla and cream to a large bowl and mix until blended. Add a few drops of milk as needed until you achieve your desired consistency.
If your frosting ends up too thin, simple add more confectioner’s sugar, a tablespoon at a time until perfect.