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 completely 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 ingredients, stirring gently by hand or on low speed until just combined. Do not overmix.
05 - Gently fold in the semisweet chocolate chips, reserving a small handful to scatter over the surface.
06 - Pour batter into the prepared pan and sprinkle reserved chocolate chips evenly on top.
07 - Bake in preheated oven for 40 to 45 minutes, or until a toothpick inserted in the center emerges clean or with just a few moist crumbs.
08 - Allow cake to cool in pan for 10 minutes, then turn out onto a wire rack to cool completely before slicing.