1Heat oven to 350°F. Spray two 10-ounce custard cups with cooking spray. In small bowl, mix topping ingredients until large crumbs form; set aside.
2In medium bowl, beat all cake ingredients with wire whisk or fork until well blended (batter will be slightly thin). Divide batter evenly among custard cups. Top each with topping mixture.
3Bake 28 to 35 minutes or until toothpick inserted in center comes out clean. Cool 10 minutes. Remove cakes from custard cups. Serve warm or cool.