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 or melted butter, eggs, granulated sugar, and vanilla extract until smooth and well blended.
03 - In a separate bowl, sift together all-purpose flour, baking powder, baking soda, and salt.
04 - Gradually add the dry ingredients to the wet mixture, stirring gently just until incorporated. Do not overmix.
05 - Gently fold in the semisweet chocolate chips, reserving a small handful to sprinkle on the surface.
06 - Pour the batter into the prepared cake pan and evenly sprinkle the reserved chocolate chips over the top.
07 - Bake in the center of the oven for 40 to 45 minutes, or until a toothpick inserted into the center emerges clean or with a few moist crumbs.
08 - Allow cake to cool in the pan for 10 minutes. Transfer to a wire rack to cool completely before slicing and serving.