1-1/4 cups mashed overripe bananas (3 or 4)
1/4 cup vegetable oil
1/4 cup sugar
1 egg
1 tsp vanilla
1-1/2 cups flour
1 tsp baking powder
1 tsp baking soda
1/2 tsp salt
1 cup chocolate chips
Mash banana in large mixing bowl with a fork; then beat with electric mixer. Add vegetable oil and sugar; then beat well. Beat in egg and vanilla.
Mix flour, baking powder, soda, and salt in a small bowl with a wire whisk. Add to first mixture, just stirring enough to moisten. Gently fold in chocolate chips. Put into paper lined muffin cups. Sprinkle with a little bit of sugar. Bake at 350 for 15-20 minutes. Makes about 10 muffins.