2 to 3 very ripe bananas, peeled (about 1 1/4 to 1 1/2 cups mashed)
1/3 cup melted butter, unsalted or salted
1 teaspoon baking soda
Pinch of salt
3/4 cup sugar (1/2 cup if you would like it less sweet, 1 cup if more sweet)
1 large egg, beaten
1 teaspoon vanilla extract
1 1/2 cups of all-purpose flour