PREHEAT oven to 350° F. Grease 8-inch-round cake pan.
COMBINE flour, 1/2 cup sugar, 2 tablespoons cocoa, 1 tablespoon coffee granules, baking powder and salt in small bowl. Beat milk, butter, egg and vanilla extract in medium bowl until blended. Add flour mixture; stir until combined. Spoon batter into prepared pan.
COMBINE remaining sugar, remaining cocoa and remaining coffee granules in small bowl. Sprinkle evenly over batter. Pour water evenly over batter.
BAKE for 20 to 25 minutes or until wooden pick inserted in center comes out clean. Cool for 5 minutes in pan on wire rack. Invert onto serving plate or serve from pan. Serve warm with whipped cream and berries.