Preheat oven to 350°F. Grease ... baking pan. Prepare cake mix batter according to package ... on wire rack. Frost cake. Cut into pieces (each ... a sunken Nestle Treasure).
Make frosting first. Mix all ingredients together ... Pour into 3 cake pans (8 inch) and bake ... 350°F. Let cool. Frost layers and sides and refrigerate before serving.