We love turnips...
In the fall I make them mashed (and well drained of excess water), with one mashed yam mixed in...
nutmeg or chineese five spice powder or allspice...
and maple syrup to taste, and lots of unsalted butter!...
then baked in the oven, in a pyrex dish, for about 30 minutes...

We make a lot of this in the fall, and then freeze in serving sizes, for later on in the winter, when we can't get the fresh ones...
freezes very well...

It's also tasty with one cooked Rome, or similar, apple, mashed, and mixed in...