In a small bowl, beat the egg. Then add the mashed banana, vanilla, milk, and peanut butter. Whisk until well combined.
Place the remaining dry ingredients into the blender and add the banana mixture. Blend until well incorporated, do not over-blend.
Heat a griddle or large saute pan to 375°F. Brush griddle with vegetable oil or spray with cooking spray.
For each pancake, pour 1/4 cup batter onto hot griddle. Cook 2-3 minutes or until bubbles form on top and edges are dry. Turn; cook other side until golden brown.
Serve topped with fresh berries and/or real maple syrup.