If they’re freshly made, let the mashed potatoes cool completely. For leftovers, proceed to the next step. 

Divide your mashed potatoes into a 1-cup portion and scoop them onto a parchment-lined baking sheet. 

Cover the baking sheet with plastic wrap. 

Slide it into the freezer for just overnight.

Once completely frozen, quickly transfer the frozen potato scoops to a dry, clean, and large freezer bag or container. 

Store again in the freezer.