First, steam cook your sweet potato. Make sure to poke holes into the potato with a fork all around it so the steam can release and you don't end up with an exploded sweet potato all over your microwave! This is a fast and easy method I love using instead of baking them in the oven for almost an hour. Take a paper towel and wet it. Ring the water out from it and wrap it around your potato.This will help keep the potato from drying out. Now take some saran wrap and wrap your potato up tight. Microwave your potato for 7 minutes until soft but still somewhat firm to the touch. Unwrap and set aside to cool a bit. Be careful taking the wrap and paper towel off. They don't call it a hot potato for nothing! Lol