It's bland as hell.

Peel a couple of spuds and cut into quarters. Put them in microwavable bowl with glad wrap on and nuke until soft (about 5 - 8 mins). Add a splash of milk, pinch of salt and a tablespoon of butter and mash the shit out of them. Adjust with milk.

Personally I boil my potatoes but I have done it this way and it works fine.