Combine cake mix with pudding mix, sour cream, milk, butter and eggs and mix according to cake directions on box. Prepare your pan by spraying with baking spray. Fill pan with batter, filling cupcake pans only 2/3 full.
Bake according to package directions for the size and type of pan you are using. Let cake cool and then remove from pan. Let cake/cakes cool further.
Lemon Curd
Split cake or cakes into layers and spread bottom layer with a generous spread of lemon curd. Replace top
Icing
Ice top of cake or cakes with white icing and garnish with fresh lemon zest and white chocolate curls or chips
Parfaits
Cut cake into cubes and layer in a glass or jar with cake, lemon curd, white chocolate chips and top with Cool Whip
Notes
*I used canned icing but you can make your own buttercream if preferred