Triple Chocolate Cake

1 pkg (8 squares) Bakers Semi-Sweet Baking Squares, divided
1 pkg (2 layer size) chocolate cake mix
1 pkg (4 servings) Jell-O Chocolate Flavor Instant pudding and Pie filling
4 eggs
1 cup sour cream
1/2 cup oil
1/2 cup water
1 tub (8 oz) Cool Whip

Preheat oven to 350 degrees. Grease two 9-inch round baking pans. Chop 2 of the chocolate squares; set aside. Beat cake mix, dry pudding mix, eggs, sour cream, oil, and water in large bowl with electric mixer on low speed just until moistened. Beat on medium speed 2 min. Stir in chopped chocolate. Spoon into prepared pans.

Bake 30-35 min or until wooden toothpick inserted in center comes out clean. Cool in pans on wire racks 10 min. Loosen cakes from sides of pans. Invert onto racks; gently remove pans. Cool cakes completely.

Place frozen whipped topping and remaining 6 chocolate squares in microwaveable bowl. Microwave on HIGH 1 1/2 min or until chocolate is completely melted and mixture is smooth, stirring after 1 min. Let stand 15 min to thicken. Place 1 cakes layer on serving plate; top with 1/4 of the chocolate mixture and the second cake layer. Spread top and side with remaining chocolate mixture.

Store in fridge.