Step 1

Heat the oven to 350 degrees F (177 degrees C).

Step 2

Spray or lightly butter muffin tin.

Step 3

In a large bowl, whip the sugar and one of the bananas together until well blended.

Step 4

Add the cooled melted butter, the egg, and the vanilla and beat well.

Step 5

Mix in the flour, baking soda, and salt just until incorporated.

Step 6

Peel and mash the remaining banana with a fork on a small plate. Fold into the batter.

Step 7

Scoop the batter into the muffin tins and fill them 3/4 of the way.

Step 8

Bake until a toothpick stuck in the muffins comes out clean, 20-25 minutes.