Preheat BBQ to 400F, or Medium Indirect heat. Place beets on foil, drizzle and rub 1 tsp oil over the beets, add salt and pepper. Wrap securely and roast on indirect heat 45-90 minutes or until they can be easily pierced with a knife. Check every 20 minutes so they don’t overcook. Alternatively, you can roast them in the oven at 400 for 60 to 90 minutes. Allow beets to cool, then remove the skins and roughly chop.