Ingredients:
1 ½ cups all-purpose flour
1 tsp baking powder
½ tsp baking soda
¼ tsp salt
¼ cup unsalted butter, melted
1 ripe banana, mashed
2 large eggs
1 cup brown sugar
1 tsp vanilla extract
¼ cup sour cream or Greek yogurt
½ cup chocolate chips
Optional: Walnuts or pecans for added texture
Instructions:
Preheat oven: Preheat your oven to 350°F (175°C) and grease or line a 9×9-inch baking pan with parchment paper.
Mix dry ingredients: In a bowl, whisk together flour, baking powder, baking soda, and salt.
Prepare wet ingredients: In a separate bowl, whisk together melted butter, mashed banana, eggs, brown sugar, vanilla extract, and sour cream (or Greek yogurt).
Combine: Gradually add the dry ingredients to the wet ingredients, mixing until combined. Fold in the chocolate chips and nuts (if using).
Bake: Pour the batter into the prepared pan and spread evenly. Bake for 25-30 minutes, or until a toothpick inserted comes out clean.
Cool and serve: Let the brownies cool completely in the pan before cutting into squares.
Enjoy your delicious Banana Bread Brownies! 
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