It should be noted that this recipe is modified from a 2004 issue of Bon Appetit, and is attributed in this blog post: http://chairmanstef.blogspot.com/2007/07/gnocchi-cant-be-beet.html .
This was really good! I just dressed the gnocchi with plain olive oil, and that was plenty flavorful. I had to add more flour; I think 2 cups total is about right.
Beet Gnocchi