Step 1

Preheat oven to Measure out the flour, baking powder, soda, walnuts and cinnamon. add to a medium bowl and whisk together to separate any clumps.

Step 2

In another medium bowl, add and mix milk, vinegar and chia seeds. Let it sit for about 2 minutes. Add in vanilla extract and whisk again.

Step 3

In a small bowl, mash up the bananas with a fork. In a large bowl, add sugar and room temperature softened butter. Be sure that the butter isn't melted. We want the butter and sugar to cream together well. I like to do this step in my stand mixer but you can also use a hand mixer here to cream the butter and sugar together. Add the mashed banana in with the creamed butter/sugar mix.

Step 4

Add the milk mixture into the butter and sugar cream. Next, slowly add in the flour. Mix on low with the hand mixer, stand mixer or by hand. Continue to add in the flour until it's all well combined. Do not over mix, but make sure there are no clumps. Add to a 9x 13 inch baking dish. This is a sheet cake style cake.

Step 5

Bake on 350 for about 40 - 45 minutes or until a toothpick comes out clean from the center of the cake. Once cake has finished, let it cool completely before frosting with your favorite vegan frosting. You may also refrigerate the cake to cool it down quicker if you are short on time.