In large bowl, beat cream cheese with electric mixer on high speed until smooth. Add 6 tablespoons sugar; beat on medium speed about 1 minute or until fluffy and smooth. Add vanilla, egg and melted butterscotch chips. Beat on low speed until just combined. Add Bisquick™ mix and milk; beat on low speed until just combined. Spoon batter evenly into cups (about 3 tablespoons in each cup).