Mix together:
2 1/2 C. flour
1 t. baking soda
1 t. baking powder
1 C. sugar
Combine and add all at once to dry ingredients:
3 or 4 black mashed bananas
1 t. vanilla
1/2 C. melted butter
2 beaten eggs
1 C. nuts (optional)
The batter will be thick. Bake at 350 degrees for about 20 minutes. Makes 14-16 muffins.