Preheat your oven to 325°F. Grease a loaf pan with non-stick spray or line it with parchment paper for easy removal.
In a large bowl, combine the cake flour, mochiko sweet rice flour, brown sugar, baking soda, and salt.
In another separate bowl, mix together the mashed bananas, eggs, melted butter, and milk.
Pour the wet ingredients into the dry ingredients and stir until just combined. Don't overmix; a few lumps are okay.
Pour the smooth batter into the prepared pan. If you want, gently top it with banana slices throughout the batter for a fun textural twist.
Bake for 50-55 minutes or until a toothpick inserted into the center comes out clean.
Allow the mochi banana bread to cool in the pan for 10 minutes before transferring it to a wire rack. Once completely cooled, slice and enjoy your homemade mochi banana bread!