Step 1

Preheat oven to 350 degrees F. Coat the bottoms of 2 (8-inch) round cake pans with cooking spray.

Step 2

In a large bowl with an electric mixer, beat cake mix, pudding mix, milk, oil, and eggs until thoroughly combined. Pour batter evenly into cake pans.

Step 3

Bake 25 to 30 minutes or until a toothpick inserted in center comes out clean. Cool 15 minutes then remove to wire racks to cool completely.

Step 4

Place 1 cake layer on a platter and frost top. Place second layer on top and frost top and sides of cake. Arrange candy bars around cake, as shown, pressing them gently to secure. The candy bars should extend higher than the cake. Place chocolate truffle in center of cake. Arrange 6 more candy bars on top of cake, as shown. Fill each wedge with remaining candies, as shown. Tie a ribbon around the cake, if desired.