Preheat oven to 350* F. Grease an 8x8 inch square baking pan and line it with parchment paper.
In a medium bowl, combine flour, baking powder, baking soda, salt and cinnamon. Whisk to combine and set aside.
2 Cups All-Purpose Flour, 1 ½ tsp Baking Powder, ½ tsp Baking Soda, ½ tsp Kosher Salt, 1 tsp Cinnamon
In a large mixing bowl, combine mashed banana, brown sugar, non-dairy milk, canola oil, vinegar and vanilla extract. Whisk well to combine. Then, add the dry ingredients and whisk to form the batter.
1 Cup Mashed Overripe Banana, 1 Cup Brown Sugar, tightly packed, ¾ Cup Non-Dairy Milk, ½ Cup Canola Oil, 2 tsp Vanilla Extract, 1 Tbsp White Vinegar
Pour the batter into a prepared 8x8-inch square baking pan and spread it out evenly with a spatula. Bake in a 350*F oven for 40-43 minutes or until a toothpick inserted into the center of the cake comes out clean. Allow to cool completely before frosting.