Step 1

Preheat oven to 425°F. Line a 12-cup muffin pan with muffins liners or spray with non-stick spray.

Step 2

In a large bowl, add flour, baking powder, baking soda, cinnamon and salt. Whisk to combine.

Step 3

In a blender, add spinach, sugar, milk, oil, applesauce, vanilla and vinegar. Blend until completely smooth and there are no spinach chunks.

Step 4

Add spinach mixture and mashed banana to the flour mixture. Whisk until all ingredients are combined. Pour batter evenly into each muffin cup, about 3/4 full.

Step 5

Bake for 5 minutes, then reduce heat to 350°F. Bake for an additional 25-27 minutes, until a toothpick inserted in a muffin comes out clean. Remove the muffins and let them cool in the pan for 10 minutes.