01 - Preheat oven to 350°F (175°C). Grease and flour a 9-inch round or square cake pan.
02 - In a large mixing bowl, whisk together mashed bananas, oil, eggs, sugar, and vanilla until thoroughly combined.
03 - In a separate bowl, sift together all-purpose flour, baking powder, baking soda, and salt.
04 - Gradually add dry ingredients to banana mixture, stirring gently until just combined. Avoid overmixing the batter.
05 - Fold in chocolate chips, reserving a small handful to sprinkle on the surface before baking.
06 - Pour batter into prepared cake pan and evenly distribute reserved chocolate chips on top.
07 - Bake for 40 to 45 minutes, or until a toothpick inserted into the center emerges clean or with only a few moist crumbs.
08 - Allow cake to cool in pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.