Some good South Indian/ Sri Lankan dishes that are essentially dry beetroot curries (some use the greens as a spinach-like ingredient).
Something like - wash, peel and slice the beets. Fine-chop a big onion, start frying it in veg oil and add mustard seeds, cumin seeds, and ground fenugreek, coriander, tumeric and hot pepper/ chili powder. Go big on the cumin seeds, coriander and mustard seeds.
When the onion is browning, add the beetroot pieces (and greens if you have them), stir around a bit then cover, turn down the heat and leave for 10 or 15 mins to cook (it kind of steams in the water from the beetroot once it is going). Stir it every so often. The beets should have a "glazed" look when they're done. Bit of salt to taste, a bit more hot pepper if you like. Plain rice and yoghurt to go with.
Tip - you can use the same recipie for cauliflower and their green bits as well.