Make Dough:

1. Preheat your oven to 350 degrees Fahrenheit. Adjust the oven rack to the lowest position. Grease 2 metal 9×5-inch loaf pan with butter or line with parchment paper.  Set aside.
2. Whisk flour, baking soda, baking powder, salt, and 1 teaspoon cinnamon together in a medium bowl. Set aside.
3. In the bowl of your stand mixer or using a handheld mixer fitted with a paddle attachment, beat together butter and brown sugar until smooth and creamy, about 2 minutes. Keep the mixer running and add the eggs one at a time, beating til well combined. Add sourdough discard, vanilla and mashed bananas.
4. With your kitchenaide on low speed, slowly beat the dry ingredients into the wet ingredients until just combined. Be careful to not overmix as this will affect the texture of the bread.
5. Lastly, add 1 cup of mini chocolate chips. You can adjust this amount depending on how chocolatey you want your bread to be.

Topping

1. Add 1/2 cup of white sugar and 1 teaspoon of cinnamon to a small bowl and mix.
2. Pour half the batter into each prepared baking pan. Batter will not quite reach the top. Generously sprinkle a few tablespoons of the cinnamon-sugar mixture over the tops of each loaf.

Bake

1. Place in the preheated oven and bake for 60–65 minutes. At the halfway point, loosely tent the bread with aluminum foil to prevent an overly brown/crusty top. The bread is done when a toothpick inserted in the center comes out clean (keep in mind the chocolate chips may stick to the toothpick)
2. Remove bread from the oven. Let the bread cool at room temperature for 1 hour. Remove bread from the pan and place on wire rack to continue cooling.

Storage

1. Banana bread can be stored at room temperature for 2 days in an airtight container or bag OR in the refrigerator for up to 1 week.
2. You can also freeze your banana bread for up to 3 months. Tightly wrap your cooled banana bread in plastic wrap and then place in a freezer bag. The night before you want banana bread, remove from freezer and let it thaw at room temperature.