Preheat oven to 350 F. Spray two 6 inch cake pans with non-stick cooking spray. Line the bottom of the pans with a piece of parchment paper cut so that they they fit the bottom of the pans.
In a medium-sized bowl, mix together almond flour, cinnamon and baking soda (and salt, if using).
In a separate bowl, mix together the mashed bananas, eggs, applesauce and vanilla extract.
Add the wet ingredients to the dry ingredients and mix until well combined (do not over mix).
Divide mixture evenly between the two baking pans.
Bake in oven for 25 minutes or until an inserted toothpick comes out clean. Allow to cool before removing from the cake pan.
Meanwhile, prepare frosting of choice. We chose to to frost the cake with homemade unsweetened whipped cream. Using a knife, spread a thin layer of frosting on the bottom layer of the cake. Place the top layer on the bottom layer and continue to apply frosting until the entire cake is covered. Top with desired toppings.