Preheat your oven to 350°F (175°C) and grease a 9x9 inch baking pan or line it with parchment paper.

Mash the ripe bananas in a mixing bowl until smooth, with a consistency similar to applesauce.

Add granulated sugar, brown sugar, and melted unsalted butter to the mashed bananas; stir until well combined.

Beat in eggs and vanilla extract, stirring until the mixture is smooth and shiny.

In a separate bowl, whisk together all-purpose flour, cocoa powder, baking soda, and salt until no clumps remain.

Gently fold the dry ingredients into the wet mixture until just combined; do not over-mix.

If desired, fold in chocolate chips for an extra chocolatey experience.

Pour the batter into the prepared baking pan and spread it evenly with a spatula.

Bake in the preheated oven for approximately 25 minutes, checking for doneness at 20 minutes.

Once baked, cool the brownies in the pan for 10 minutes before transferring to a wire rack to cool completely.