Step 1
Prepare the outdoor grill for high heat.
Step 2
Spray one side of a large piece of aluminum foil with cooking spray. Place the beets and butter on the foil, then season with salt and pepper.
Step 3
Wrap the foil over the beets and place the packet on the grill grate. Grill until the beets are very tender, about 30 minutes.
Step 4
Allow the beets to cool for about 5 minutes before serving. No need to peel the beets before enjoying!