Turn them into sweet potato fries to keep in the freezer! (Although little miss is on a no sweet potato fry kick I will break her of that!)
First thing is you wake up early on a Saturday morning and have the kitchen to yourself (not really, but that did happen and I LOVED every minute of it) Ok so really you cut your potatoes into the shape you want, feel free to use a mandolin.
While you are cutting, put a pot of water on to boil. When ready drop your fries in small batches into the pot to blanch for 3 minutes.
After they are blanched put them on to a cookie sheet to cool.
Once cooled I put them in the freezer overnight then into a plastic bag to keep. When I want fries I pull them out of the freezer and into a 375* over for 20-25 minutes. Perfect use of extra potatoes and a huge savings!