1/4pound (1 stick)unsalted butter, melted and slightly cooled
1largeeggroom temperature
2teaspoonsvanilla extract
1 1/2cupsall-purpose flour
1/2cupcocoa powder
1teaspooncinnamon
1/4teaspoonkosher salt
1 1/2teaspoonsbaking soda
1/2cupchopped walnuts, toasted
Instructions
Preheat oven to 350ΒΊ. Lightly coat four mini-loaf (2-cup) pans with cooking spray.
Place bananas and sugar in a mixing bowl and beat for 2β3 minutes. Add butter, egg, and vanilla extract, mixing well. Scrape down bowl sides and add flour, cocoa powder, cinnamon, salt, baking soda, and nuts, if using. Mix to combine.
Fill pans about half full with batter. Bake until firm in the center and a toothpick inserted comes out with a bit of crumb on it, 35β40 minutes. (Or use 16 muffin tins and bake 15β18 minutes, or a full-size loaf pan and bake for 1 hour.) Cool completely. To freeze, wrap in plastic and then in foil; freeze up to one month.