Grape Salad

1. In a large mixing bowl with a handheld electric mixer, beat together the cream cheese, sour cream, sugar, and vanilla until well blended, creamy and smooth.
2. Gently fold in the red grapes, green grapes, and 1/4 cup of the pecans until everything is coated.
3. Cover and chill for at least 1 hour (or overnight.)
Before serving, combine the remaining 1/4 cup pecans and the brown sugar; sprinkle over the top of the salad. Enjoy cold.