Preheat oven 350 degrees.
In a medium bowl combine almond milk and ground flaxseeds, set aside for 5 minutes.
In the meanwhile, spread coconut oil on the bottom of the pan. Sprinkle coconut sugar on top.
Place banana rounds on top to the oil/sugar and set aside.
Add coconut oil, vanilla, and mashed bananas to the almond milk/flaxseed mixture, stir to combine.
In a large bowl, combine, brown rice flour, almond flour, coconut sugar baking powder and salt. Stir to fully combine.
Stir wet ingredients into dry ingredients until fully combined. Pour batter evenly over banana slices. Lightly tapping pan on counter.
Bake for 45 minutes or until a toothpick inserted into the center comes out clean.
Allow pan to cool for 5 minutes on a wire rack. Invert cake on to a large platter.