Step 1: Preheat your oven to 350°F (175°C).
Step 2: Grease your 9x13-inch baking pan with oil or line it with parchment paper.
Step 3: In a large mixing bowl, whisk together the white whole wheat flour, sugar, baking soda, salt, and cinnamon.
Step 4: In another bowl, mash the bananas until smooth.
Step 5: Add the oil and almond milk to the mashed bananas, and stir until well combined.
Step 6: Pour the wet mixture into the dry ingredients and fold gently until just combined.
Step 7: Pour the batter into the prepared baking pan and smooth the top. Bake for 30-35 minutes or until a toothpick comes out clean.
Step 8: Let the cake cool in the pan for about 10 minutes, then transfer to a cooling rack.
Step 9: Once cooled, frost with cream cheese frosting.