Image credit to: Jeff Barry
No need for a mixer for this recipe, which is easy enough that you could enlist your kids to help (that's Liam, the son of Boston Organics owner Jeff Barry, pictured).
Preheat the oven to 350°F (175°C). With a wooden spoon, mix butter into the mashed bananas in a large mixing bowl. Mix in the sugar, egg, and vanilla. Sprinkle the baking soda and salt over the mixture and mix in. Add the flour last, mix. Pour mixture into a buttered 4x8 inch loaf pan. Bake for 1 hour. Cool on a rack. Remove from pan and slice to serve.