Preheat oven to 350 degrees F (175 degrees C). Grease and flour an 8x4 inch loaf pan.
In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. Set aside.
In a large bowl, cream the butter and sugar together until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla. Beat in the flour mixture alternately with the buttermilk, mixing just until incorporated.
Pour the batter into the prepared pan and bake for 40-45 minutes, or until a toothpick inserted into the center of the loaf comes out clean.
Let the loaf cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely before slicing.
Interesting Facts
Amish Friendship Chocolate Bread is a traditional Amish recipe that is often served during special occasions.
This bread is a great way to use up over-ripe bananas.
You can also add walnuts, chocolate chips, or other mix-ins to the batter for added flavor and texture.