1: Preheat oven to 375°F.
2: Mix dry ingredients (flour, baking soda, salt, and sugar).
3: In another bowl, mash the bananas and mix with wet ingredients (egg, vanilla, and melted butter).
4: Combine dry and wet ingredients, folding them gently.
5: Add chocolate chunks and mix.
6: Fill muffin tins and bake for 18-20 minutes.
