Best Ever Banana Muffins

3 large bananas

3/4 cup white sugar

1 egg

1 tsp. baking soda

1 tsp. baking powder

1/2 tsp. salt

1 1/2 cups flour

1/3 cup melted butter

Mash bananas and add sugar and egg.

Add butter.

Add dry ingredients.

Bake at 375F for 20 minutes.