Beat pudding mix and 1 cup milk in medium bowl with whisk 2 min. Stir in COOL WHIP. Let stand 5 min. Meanwhile, cut cake horizontally into 2 layers with serrated knife.
Stack cake layers on plate, spreading pudding mixture between layers.
Microwave chocolate and butter in medium microwaveable bowl on HIGH 1 min. or until butter is melted; stir until chocolate is completely melted and mixture is well blended. Add sugar and remaining milk; mix well. Spread over cake. Refrigerate 1 hour.
Use a 2-layer cake mix to bake 2 (8- or 9-inch) round cake layers. Cool completely. Use 1 of the cake layers as directed. Wrap remaining cake layer tightly in plastic wrap, then in foil. Store in freezer up to 1 month.
How to Slice Cake Layer Evenly
Place cooled cake layer on serving plate. Make 2-inch-deep horizontal cut around side of cake using long serrated knife. Then, cut all the way through cake layer to make 2 layers.
Calories From Fat
% Daily Value*
Total Fat 8g
Saturated Fat 4.5g
Trans Fat 0g
Total Carbohydrates 31g
Dietary Fiber less than 1g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.