Preheat oven to 350° F
Prepare muffin tin with nonstick spray or muffin liners.
In the bowl of your stand mixture (or if using a hand mixer, a medium sized bowl) mix together the gluten free flour, baking soda, salt, and cinnamon.
In a separate bowl, mix together egg replacer (according to package directions), maple syrup, coconut or olive oil, plant based milk, and vanilla extract. Whisk together until blended.
Pour wet ingredient mixture into dry ingredient mixture and stir (or mix with mixer until combined).
In a separate bowl, mash together 3 ripe bananas.
Add in mashed bananas, vegan chocolate chips and chopped walnuts and gently stir until combined.
Scoop your muffin batter into your prepared muffin tin 3/4 full.
Top with more chopped walnut pieces and vegan chocolate chips.
Bake for 18-20 minutes or until tops are golden.
Allow the muffins to cool before serving. Enjoy!