I'll place the cupcakes or cake in the freezer 20 to 30 minutes before I leave. The dessert won't be totally frozen, but it will be cold, set, and hard. Freezing it also means that frosting won't get all over the place. When I arrive at the party, I simply leave the cake out or place it in the fridge. By the time it's served, it is the perfect temperature! Do you transport desserts? Share your method with us below.