01 - Preheat the oven to 350°F. Grease and flour a 9-inch round or square cake pan.
02 - In a large mixing bowl, whisk together the mashed bananas, vegetable oil or melted butter, eggs, granulated sugar, and vanilla extract until thoroughly blended.
03 - In a separate bowl, sift together the all-purpose flour, baking powder, baking soda, and salt.
04 - Gradually add the dry mixture to the wet ingredients, stirring gently with a spatula until just combined. Avoid overmixing.
05 - Fold in the chocolate chips, reserving a small portion to scatter on top just before baking.
06 - Pour the batter evenly into the prepared cake pan. Sprinkle reserved chocolate chips over the surface.
07 - Place the pan in the oven and bake for 40 to 45 minutes, or until a toothpick inserted in 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 fully before slicing.