Banana Granola Muffins

Preheat oven to 350 ºF. Grease muffin pan with cooking spray and set aside. In a large bowl, whisk together the flour, sugar, baking soda and salt, then stir in the granola. In a separate bowl, combine the mashed bananas, plain yogurt, eggs, butter and vanilla. Delicately fold the wet banana mixture into the dry mixture, adding it in thirds until the wet and dry ingredients are just combined. Pour the batter into the prepared muffin pan and bake for 10-12 minutes, or until a toothpick inserted into a muffin comes out clean.