Place the cookies on a baking sheet and spread each cookie with peanut butter.

Whip the heavy cream until stiff peaks form. Fold in the powdered sugar, sour cream and pudding. Pipe the cream onto the cookie and place the baking sheet in the freezer while you melt the chocolate.

In a double broiler melt the chocolate chips and oil together. Remove from heat and allow to cool for 15 minutes.

Remove the cookies from the oven and dip the tops into the melted chocolate. Return to pan and chill until ready to serve.