Mash the banana with a fork until smooth and there are no large pieces left.
In a medium-sized bowl, combine protein pancake mix, almond milk, cinnamon, vanilla extract, bananas and walnuts, and stir with a spatula or whisk to combine.
Heat a small non-stick skillet on medium-high heat and spray with cooking spray.
Scoop 1/3 cup of pancake batter and pour into pan slowly. The batter will be thick so you may need to spread with a spoon.
Griddle pancakes for 1 ¾ -2 minutes per side.
Serve with warm maple syrup and additional bananas or walnuts.