1Heat oven to 350°F. Spray 13x9-inch pan with cooking spray. In large bowl, beat cake ingredients with electric mixer on medium speed 2 minutes. Pour batter into pan.
2In medium bowl, mix topping ingredients with fork. Sprinkle over batter.
3Bake 45 minutes or until toothpick inserted in center comes out almost clean. Cool completely in pan on cooling rack. Garnish with whipped cream, cinnamon, and crystallized ginger.