Preheat Oven: Preheat oven to 350°F (175°C). Grease a 9x9-inch baking pan or line it with parchment paper.
Mash Bananas: In a large bowl, mash bananas until smooth.
Mix Wet Ingredients: Add melted butter, sugar, eggs, and vanilla. Whisk until smooth and glossy.
Add Dry Ingredients: Sift in cocoa powder, flour, and salt. Gently fold until just combined.
Add Chocolate Chips: Fold in 3/4 cup chocolate chips, reserving 1/4 cup for topping.
Bake: Pour batter into the prepared pan. Sprinkle remaining chocolate chips on top. Bake for 20–25 minutes, or until edges are set and the center slightly jiggles.
Cool: Let cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
Slice: Cut into 9–12 squares and serve.
Video
Notes
Banana Ripeness: The browner the bananas, the sweeter and more flavorful the brownies.Storage: Store in an airtight container at room temperature for 2 days, in the fridge for up to 5 days, or freeze for up to 3 months.Reheating: Microwave for 10 seconds or warm in a 300°F oven for 5 minutes for a fresh-baked feel.Customizations: Add nuts, swirl in peanut butter, or top with sea salt for extra flair.Gluten-Free Option: Substitute all-purpose flour with a 1:1 gluten-free baking blend.