Ingredients
2-1/4 cups all-purpose flour, divided1-1/4 cups sugar, divided1 tablespoon baking cocoa1/4 teaspoon ground cinnamon3 tablespoons butter, softened3/4 cup dark chocolate chips, divided1 teaspoon baking powder1 teaspoon baking soda1/2 teaspoon salt2 large eggs, room temperature1 cup mashed ripe avocados (about 2 medium)1/2 cup buttermilk1 teaspoon vanilla extract1/4 cup chopped walnuts
Preparation
Preheat oven to 350°. For topping, in a small bowl, combine 1/4 cup flour, 1/4 cup sugar, cocoa and cinnamon. Cut in butter until crumbly. Stir in 1/4 cup chocolate chips; set aside.
In a large bowl, whisk baking powder, baking soda, salt and remaining 2 cups flour and 1 cup sugar. In another bowl, whisk eggs, avocado, buttermilk and vanilla until blended. Add to flour mixture; stir just until moistened. Fold in walnuts and remaining 1/2 cup chocolate chips.
Transfer to a greased 9x5-in. loaf pan; sprinkle with reserved topping. Bake until a toothpick inserted in center comes out clean, 60-70 minutes. Cool in pan 10 minutes before removing to a wire rack to cool completely.
