I made some of mine into borscht, roasted some of them, and pickled the rest. The borscht was my mum's recipe and was delicious. Just grated then boiled them with a bit of stock, salt and pepper, but you can add any veg that you like, boiled it for about 40 minutes on a low light. Can be eaten hot or cold, added a swirl of creme fraiche or sour cream so goes a fab colour.
Also made beetroot hummus but no one liked it but me, I think the bright pink colour put them off!