Grape salad! It is my new favorite treat. I had it at a friend of mine's sons birthday. Take 1 8 oz package of sour cream, 1 8 oz package of cream cheese, 1/2 cup of sugar, and 1/2 teaspoon of vanilla and mix well. Add 4 pounds of green grapes and stir until coated well. Mix 1 cup of brown sugar and 1 cup chopped pecans or walnuts in separate bowl. Then spread on top of grape mixture and chill until served. It is super tasty and is a favorite with adults and kids.