Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2                    sweet potatoes -- (medium) cut
   1      cup           water
     1/4  cup           sugar
     1/4  cup           light brown sugar -- (packed)
   4      tablespoons   unsalted butter
   1 1/2  teaspoons     vanilla extract
                        juice and grated rind from 1

Preparation:

In a 1-quart saucepan combine sweet potatoes, water, sugars, 2 Tbsp of the butter; the vanilla and lemon juice and rind. Cover and cook over medium heat for 20 minutes, stirring occasionally; uncover and cook until potatoes are fork tender, about 10 minutes. Add the remaining butter, stirring until completely melted. Cook uncovered until sauce is thick, about 2 minutes more. Makes about 1 Cup.