Don't know if this is too simple to call a recipe, but it's a lovely way to have potatoes and goes great with fresh simple food like grilled mackerel.
Boil up some new potatoes in a pot as you would normally till they're ready to eat (20 mins).
Drain the potatoes and pop in a bowl.
Melt some butter in the pan, add a handful of oatmeal and some chopped up cyboes/spring onion/or whatever you call a wee onion with a long green sprout.
Sautee for a minute or two. Put the potatoes in the pot with the mix, swirl around till they're coated and serve your "Mealy Potatoes".