Chocolate Chip Cheeseball

1 (8-oz) pkg cream cheese, softened
½ c. butter, softened (no substitutes)
¼ tsp. vanilla
¾ c. finely chopped pecans
¾ c. powdered sugar
2 T. brown sugar
¾ c. mini chocolate chips
Chocolate & regular graham crackers

In mixing bowl, beat cream cheese, butter and vanilla with mixer until fluffy. Gradually add the sugars; beat just until combined. Stir in chocolate chips. Cover and refrigerate 2 hours. Place cream cheese mixture on plastic wrap and shape into ball; refrigerate at least 1 hour. Just before serving, roll in pecans. Serve with graham crackers.