Grilled Sweet Onions

Sweet Onions, at least 1 per person
butter
beef bouillon cubes, 1 per onion

Cut the top off of each onion, being careful not to take off too much off. Dig out a small portion of the middle. Put a bouillon cube and a tablespoon or so of butter into the hole left. Wrap the onion completely in foil and grill until the onion is very tender. To eat these, use a fork and eat from the inside out, leaving the outer layers.