Prepare 8 x 4 inch loaf pan by greasing with cooking oil or lining with parchment paper.
In a small bowl, mix 1 tbsp ground flax meal and water to create flax egg. Let sit for 5 minutes.
In medium bowl, mix wet ingredients, including flax egg.
In a separate medium bowl, mix dry ingredients.
Combine wet and dry ingredients and stir to mix. Pour into loaf pan and, if desired, cut additional banana length-wise and place half on top of loaf. Push gently into batter.
Bake for 45-50 minutes or until the center is set and brown on the edges.