Busy Day Banana Cake

1 1/3 cups unbleached flour
½ cup sugar
1 ½ teaspoons baking powder
¼ teaspoon ground nutmeg
2/3 cup mashed very ripe banana (about 1- ½ large)
1/3 cup maple syrup
3 tablespoons fat-free egg substitute

Icing:
1 cup nonfat ricotta cheese
2 tablespoons maple syrup
½ teaspoon vanilla extract

1. Combine flour, sugar, baking powder, and nutmeg, and stir to mix well. Add the remaining ingredients, and stir to mix.
2. Coat an 8 inch square pan with nonstick cooking spray. Spread the batter evenly in the pan, and bake at 325º for about 30 minutes, or just until a wooden toothpick inserted in the center of the cake comes out clean. Cool the cake to room temp.
3. To make the icing, place the ricotta cheese, maple syrup and vanilla extract in a food processor and process until smooth. Spread the icing evenly over the cake, cut into squares, and serve immediately or refrigerate.