Remove beet greens, leaving about 1 inch of stem affixed to the root. Save beet greens for another use.
Place beet in the middle of an aluminum foil sheet. Drizzle with olive oil and sprinkle with salt and pepper. Wrap up tightly in foil.
Place wrapped beets in Crock Pot and cook on high for 3-4 hours.
Remove from Crock Pot. Rub beets with a paper or cloth towel to remove skin. Dice and serve. Optional: Top with your favorite herbs, like thyme, tarragon, parsley, or oregano.
Notes
*You can make as many roasted beets as your slow cooker can hold, generally about 2 bunches. Wrap each beet individually in aluminum foil.