2/3 cup All-purpose flour 1/2 cup Sugar substitute 1 teaspoon Baking powder 1/4 teaspoon Salt 1/4 cup softened Margarine 2 large lightly beaten Eggs 1 teaspoon Vanilla 1/2 cup unsweetened Apple sauce 1/4 cup unsweetened Cocoa powder
In bowl, stir together flour, sweetener, baking powder and salt; set aside.
In mixing bowl, beat margarine, eggs and vanilla for 1 minute. Add apple sauce, beat just until blended. Fold in flour mixture just until moistened.
Using 1/3 of the batter, drop by spoonfuls into greased 8-inch square cake pan. Fold cocoa powder into remaining batter just until combined. Gently spoon batter into pan covering white batter and smoothing surface.
Bake in 350°F oven for 15 minutes or until tester inserted in centre comes out clean. Transfer to rack; let cool.