Preheat Oven: Preheat oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper.
Mash Bananas: In a bowl, mash the ripe bananas until smooth.
Wet Ingredients: Add melted butter, brown sugar, egg, and vanilla. Mix well.
Dry Ingredients: In another bowl, whisk flour, baking soda, salt, and cinnamon.
Combine: Gently fold dry ingredients into the wet mixture until just combined. Avoid overmixing.
Add Chocolate Chips: Stir in 3/4 cup chocolate chips.
Bake: Pour batter into the loaf pan. Sprinkle extra chocolate chips on top. Bake for 50–60 minutes or until a toothpick inserted comes out clean.
Cool: Let cool in the pan for 10 minutes, then transfer to a wire rack.