In a large bowl, beat cream cheese until fluffy. Beat in the sugar, egg, and salt until smooth.
Fold in chocolate and peanut butter chips; set aside.
Cupcakes
In a large bowl, beat the sugar, water, oil, vinegar, and vanilla until well blended.
In a large bowl, combine the flour, cocoa, baking soda and salt; gradually beat into sugar mixture and mix well.
Fill paper-lined muffin cups half full with batter.
Top each with about 2 tablespoons of the cream cheese mixture. Bake at 350° for 25-30 minutes or until a toothpick inserted into the cupcake (not filling) comes out clean.
Cool for 10 minutes before removing from pans to wire racks to cool completely. Yield: 1-1/2 dozen.