Preheat the oven to 350 F. Grease a 9×5 loaf pan. Stir dry ingredients in a bowl, then add remaining and stir to form a batter. (If using peanut butter, gently heat it if not already easily stir-able.) Smooth batter into the pan. Bake on the center rack 40 minutes or until a toothpick inserted into the center of the loaf comes out clean. Let cool completely, as it becomes easier to slice after sitting a few hours. Taste and texture are ten times better the next day if you can wait!
