Heat oven to 400 degrees. Lightly spray twelve medium muffin cups with cooking spray. In medium bowl, combine oats and buttermilk; mix well. Let stand 10 minutes. Stir in egg substitute, margarine and lemon peel until blended.
In large bowl, combine flour, sugar or sweetener, baking powder, baking soda and salt; mix well. Add oat mixture all at once; stir just until dry ingredients are moistened. (Do not over-mix.) Gently stir in berries. Fill muffin cups almost full. Bake 20-25 minutes or until golden brown. Cool muffins in pan on wire rack 5 minutes; remove from pan. Serve warm.
Yield: 1 dozen