<human>:  How do I frost a two-tiered cake?
<bot>: Frosting a two-tiered cake can be easy and fun! Start by leveling off the cake layers with a long serrated knife. Spread a thin layer of buttercream on the top and sides of each layer. Place the cake layers in the freezer for 10 minutes to help the buttercream set. This will make the next layer of frosting easier to apply. Once the 10 minutes is up, cover the entire cake in a crumb coat. This should be a thin layer of frosting that seals in any loose cake crumbs. Finally, spread your desired top layer of frosting over the cake. This can be done with a spatula or with a piping bag. Enjoy your delicious, frosted two-tiered cake!