And again, I have too many to eat all at once so after doing some research on the Internet I found that they can be frozen.
Peel them.

Blanch them in boiling water for two minutes and then plunge them in an ice bath.

Freeze them individually and then into a zip lock bag.

I kept mine whole because I like to roast whole parsnips and carrots together when I roast a chicken or roast but you can just as easily cut them into bite size pieces.
A real winner!!!
Margaret