This recipe is for supermoist banana-nut muffins. It calls for mixing dry ingredients like flour, baking powder, baking soda and salt together. Wet ingredients like mashed bananas, brown sugar, oil, eggs and vanilla are beaten separately. Then the wet ingredients are stirred into the dry until just combined. Chopped walnuts are added. The batter is scooped into a greased muffin tin and baked for about 11 minutes until a toothpick inserted in the center comes out clean. Makes 10 muffins and offers an optional chocolate chip variation.