Check out this recipe to make delicious banana-chocolate banana bread:
2 c. all-purpose flour
1 tsp. baking soda
1/2 tsp. kosher salt
1/2 c. (1 stick) unsalted butter, melted
1 c. granulated sugar
1 large egg plus
1 egg yolk
1/4 c. sour cream
1 tsp. vanilla extract 3 ripe bananas, mashed
1/2 c. semi-sweet chocolate chips
1/2 c. chopped toasted walnuts (optional)
1. Preheat oven to 350º. Line a loaf pan with parchment paper and grease with cooking spray.
2. In a large bowl, whisk together flour, baking soda, and salt. Set aside.
3. In another large bowl, mix together butter, sugar, egg and egg yolk, sour cream, and vanilla. Add mashed bananas and stir until combined. Gradually add dry ingredients to wet ingredients until just combined. Fold in chocolate chips and walnuts and transfer to prepared loaf pan.
4. Bake until a toothpick comes out clean, about 1 hour.
Let cool 10 minutes in pan, then turn out onto a cooling rack to cool completely.