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, vegetable oil or melted butter, 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 stir the dry ingredients into the wet mixture, mixing gently until just combined. Avoid overmixing to preserve a tender cake crumb.
05 - Fold in chocolate chips, reserving a small handful to sprinkle on the surface before baking.
06 - Pour the batter into the prepared cake pan. Sprinkle reserved chocolate chips on top. Bake in preheated oven for 40 to 45 minutes, or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
07 - Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. Slice and serve as desired.