Meatloaf in an Onion

Use your favorite meatloaf recipe. Slice 6 large peeled onions in half and remove centers. Spoon meat mixture into half of the onion halves. Top with the other half. Place each filled onion on a piece of heavy duty aluminum foil. Bring ends of foil up over onion and fold tightly. Cook on coals 14 to 20 minutes on each side.