Mash them with a ton of butter and add some milk. Unleash your inner porridge nog and add some flour to the leftovers and fry them for tattie scones, you'll spunk everywhere.
Slight PL but I worked down in London for a bit and couldn't get tattie scones from the shops so had to make them myself. Let my Polish flatmate try them and he said they'd be good with jam and cream and I'm actually tempted to try it.