actually i used a food processor..

I steamed 1 large head ( cut into flowerettes) til almost tender... and threw them in the food processor till purreed...
then added 1/2 cup cheddar cheese shredded..
4 T. sourcream
1 tsp. salt and cumin.. instead of pepper
1/4 cup parmesan cheese
~~~~~

Purree'd them all til smooth..
then melted some butter on top...

OMG totally delish... and worth the effort.

I totally recommend!!!
My boyfriend even loved them... and he is a potatoe freak