#1. Preheat oven to 350°F. #2. For the Cake, beat all ingredients in large bowl with electric mixer on low speed just until moistened, scraping side of bowl frequently. Beat on medium speed 2 minutes or until well blended. #3. Pour into greased and floured 13x9-inch baking pan. #4. Bake 30 to 35 minutes or until toothpick inserted in center comes out clean. Cool in pan on wire rack. #5. Gradually beat in confectioners' sugar until smooth. Spread cake with Frosting.