Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4      large         onion -- sliced
     1/4  cup           cider vinegar
     1/4  cup           butter -- melted =or=-
     1/4  cup           margarine -- melted
     1/4  cup           boiling water
     1/4  cup           sugar
                        (would use sugar substitute)

Preparation:

Slice the onions and arrange in a 1 quart baking dish. Mix the rest of the ingredients and pour over the onions. Bake at 300 degrees for 1 hour.