Heat oven to 350°F. Grease bottoms only of 2 (9-inch) round cake pans. In large bowl, beat cake mix, water, butter, eggs and coffee granules with electric mixer on low speed 30 seconds or until blended. Beat on medium speed 2 minutes. Pour batter into pans. Bake 28 to 33 minutes or until toothpick comes out clean. Cool 10 minutes; remove from pans. Cool on cooling racks.