Preheat your oven to 375°F, and spray a loaf pan with non-stick cooking spray.
In a large bowl, sift ww flour, cinnamon, salt, baking powder, and baking soda.
In a small bowl, whisk together egg substitute, molasses, brown sugar, margarine, applesauce, yogurt, grated apple and lemon zest until combined.
Pour wet ingredients into flour mixture, stirring just until moistened, then gently fold in cranberries and raspberries (and optional nuts). Batter will be very thick.
Spread batter into prepared loaf pan (big one!) and bake for 50-60 minutes or until toothpick inserted in centre comes out clean. Cool on cooling rack 10-15 minutes before removing from pan. Cool completely on wire rack.