Wash pumpkin, do not peel. Cut a large enough piece from the top to use as a cover. Clean out the inside seeds. Brown the meat in butter with the onions. Add the rest of the ingredients and mix well. Put this mixture inside the melon, cover with melon top and secure in place with toothpicks. Place in a pan of the same size and bake in moderate oven until cooked. When serving, cut as you would cut a melon and leave a portion of meat on top of each piece.
A medium size melon could also be used for this purpose.