01 - Preheat oven to 350°F. Grease and flour a 9-inch round or square cake pan.
02 - In a large mixing bowl, whisk together mashed bananas, vegetable oil, eggs, granulated sugar, and vanilla extract until fully blended.
03 - In a separate bowl, sift together all-purpose flour, baking powder, baking soda, and salt.
04 - Gradually add dry mixture to the wet ingredients, stirring gently until just combined. Avoid overmixing.
05 - Fold in chocolate chips, reserving a small portion to sprinkle on top of the batter.
06 - Pour batter into prepared pan, scattering reserved chocolate chips evenly over the surface.
07 - Place pan on middle oven rack and bake for 40 to 45 minutes, or until a toothpick inserted into the center emerges clean or with a few moist crumbs.
08 - Let cake cool in the pan for 10 minutes. Transfer to a wire rack and allow to cool completely before slicing and serving.