01 - Preheat oven to 350°F. Grease and flour a 9-inch round or square cake pan.
02 - In a large bowl, whisk together mashed bananas, vegetable oil or melted butter, eggs, granulated sugar, and vanilla extract until smooth and fully incorporated.
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 until just combined. Avoid overmixing to ensure a tender cake.
05 - Fold in most of the chocolate chips, reserving a small handful to sprinkle on the surface before baking.
06 - Pour the batter evenly into the prepared cake pan. Sprinkle the reserved chocolate chips over the batter.
07 - Bake for 40 to 45 minutes, or until a toothpick inserted in the center emerges clean or with a few moist crumbs.
08 - Cool the cake in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.