Crushed Reduced-Fat Oreo's or 100 calorie Oreo crisps, optional
In a large bowl, combine the cake mix, pudding mix, water and egg whites. Beat on low speed for 1 minute; beat on medium for 2 minutes.
Pour into a 9-in x -13-in baking pan coated with cooking spray. Bake at 350° for suggested time on box or until a toothpick inserted near the center comes out clean. Cool on a wire rack.
For frosting, place milk and extract in a large bowl. Sprinkle with a third of the pudding mix; let stand for 1 minute. Whisk pudding into milk. Repeat twice with remaining pudding mix. Whisk pudding 2 minutes longer. Let stand for 15 minutes. Fold in whipped topping. Frost cake. Refrigerate any leftovers