1 (18 ounce) package white chocolate candy coating, softened
2 (3 ounce) packages instant chocolate pudding mix
Prepare chocolate cake according to package directions and line with foil; fill and frost edges. Arrange chocolate cake wrapped in foil over another cake to drizzle with marshmallow creme. Refrigerate to allow flavors to blend.
Each package of pudding contains 64 marshmallows. Pour into half of each empty package, cutting onto top and bottom side of package. Coat cake with marshmallow creme before removing foil.
Place frosting on cake to allow to drip; frost far side of cake. Refrigerate until firm before spreading frosting over cake. Refrigerate remaining pudding for at least one hour.