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 fold the dry ingredients into the wet mixture, stirring gently until just combined. Avoid overmixing.
05 - Fold in the chocolate chips, reserving a small handful to sprinkle on the surface before baking.
06 - Pour the batter into the prepared cake pan. Evenly scatter reserved chocolate chips on top.
07 - Bake for 40 to 45 minutes, or until a toothpick inserted in the center emerges clean or with a few moist crumbs attached.
08 - Let the cake cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.