With mixer, mix yellow cake mix, melted butter and 1 egg. Press into pan.
Next, beat cream cheese until creamy (takes a few seconds), add confectioners’ sugar and two eggs and mix until well blended. Fold in peanut butter chips and ½ cup heath bar bits. Pour all this over yellow cake mixture. Sprinkle the rest of the heath bar bits on top and bake for 45 minutes. You can garnish with confectioners’ sugar.