Notes from the Test Kitchen:
Oh wow, this is such a good, sweet appetizer! I just can't think of any better way to put it. You may be tempted to just use your finger for tasting, but we recommend serving with graham crackers.
In mixer, beat cream cheese and butter until creamy. Add sugars and vanilla and mix until well-combined. Stir in chocolate chips. Cover and refrigerate for at least 2 hours. Gather cold mixture into a ball and cover with plastic wrap. Chill another hour. Roll ball in pecans just before serving.
Usually, I skip the ball stage and serve this as a spread without the pecans. It's great on chocolate, cinnamon and honey graham crackers, vanilla wafers, shortbread or butter cookies.