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 the mixture is fully incorporated.
03 - In a separate bowl, sift together all-purpose flour, baking powder, baking soda, and salt.
04 - Gently add the dry ingredient mixture to the wet ingredients, stirring only until just blended to avoid overmixing.
05 - Fold in the semisweet chocolate chips, reserving a small portion to sprinkle over the top of the batter.
06 - Transfer the batter evenly into the prepared pan and scatter the reserved chocolate chips over the surface.
07 - Bake in the center of the preheated oven for 40 to 45 minutes, or until a toothpick inserted into the center emerges clean or with a few moist crumbs.
08 - Allow the cake to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.