Make cupcakes according to directions on box. We have used a yellow cake mix and French vanilla cake mix for the cupcake part. Both flavors of cake mix taste great for the cupcakes.
Mix together pudding, cream, powdered sugar, milk, and sour cream. Beat on medium speed until stuff peaks form. Cut each cupcake in half and add a dollop of filling. Put top back on cupcake and frost with ganache.
Heat cream in sauce pan until it comes to a boil. Remove from heat, pour over chocolate in a mixing bowl. Stir to mix together. Let cool slightly.