Preheat the oven to 350-degrees. Prepare a muffin tin with liners or cooking spray.
In a large mixing bowl, sift together the dry ingredients.
1½ cups all-purpose flour, 1/2 cup plus 1 tablespoon sugar, 1 teaspoon baking soda, 1/2 teaspoon baking powder, 1/4 teaspoon salt, 1/2 teaspoon cinnamon
In another bowl, beat the eggs until fluffy. Whisk in the butter, bananas and vanilla.
1/2 cup butter softened, 1½ cups ripe bananas mashed, 2 large eggs, 2 teaspoons vanilla
Gently mix the wet ingredients into the dry ingredients, taking care not to overmix.
Divide the batter evenly between the wells in the muffin pan.
Bake 15-20 minutes until a toothpick comes out clean. Remove from the oven and set on a wire rack to cool for 10 minutes, before removing from the pan to cool completely.