Imagine sinking your fork into a square of these Banana Bread Brownies where the fudgy chocolate meets the soft banana crumb and the walnuts add just the right amount of crunch.
Preheat your oven to 350 degrees and line a 9×9 pan with parchment paper.
In a small bowl, whisk together the flour, cocoa powder, baking powder, cinnamon, and salt until everything looks nice and even.
In a separate bowl, whisk the melted butter with the sugar until it comes together. Add the eggs and vanilla, then whisk with a little energy for about a minute.
Fold in the mashed banana with a spatula, just until it blends in.
Add the dry ingredients and fold gently until the batter is smooth and combined.
Mix in half of the chocolate chips and walnuts, keeping the rest for the top.
Spread the batter into your prepared pan, smoothing it out. Sprinkle the remaining chocolate chips and walnuts over the surface.
Bake for 30 minutes, or until a toothpick inserted in the center comes out mostly clean. Let the brownies cool completely before cutting them into squares.
Store them in an airtight container at room temperature for up to three days.