Thank you! I was thinking of maybe baking them in the oven after defrosting to dry them out a bit.

yes, my MIL used to do this all the time. They reheat in the microwave really well. The texture is somewhat affected, but they are still very good.

Forgot to add the ingredients are yukon gold potatoes with earth balance (fake butter), skim milk, and sour cream.

I made mashed potatoes with dinner last night, and made way too many! Has anyone had success with freezing mashed potatoes?