Preheat oven to 350°

Place paper muffin cups into muffin tin

In large bowl combine flour, sugar, baking power, baking soda & salt.

In different bowl combine egg, oil, yogurt & vanilla.

Add dry ingredients to the wet mixture, stir till all ingredients are moist.

Gently stir in mashed banana & 3/4 cup chocolate chips

Spoon mixture into paper-lined muffin cups (fill to top)

Bake 22-25 or till toothpick comes out clean.

Place extra chocolate chips on the muffin tops

Cool 5 minutes before removing from muffin tin