Preheat oven to 350 degrees. Spray a 9" x 13" baking pan with non-stick cooking spray. Reserve 1 cup of dry cake mix and set aside.
In a large bowl, combine remaining cake mix, 1/4 cup egg substitute and oil; blend well to form dough. Press dough into bottom of prepared baking pan.
In medium bowl, beat 3/4 cup egg substitute, buttermilk, margarine, sugar and vanilla until well blended. Slowly add reserved cake mix and beat on medium speed until mixture is smooth, about 2 minutes. Pour over dough in baking pan and bake for 35 minutes or until light brown on top. Cool completely and cut into bars.
Nutrition Information:
145 Cal., 4.7 g. fat, 0 g. fiber
