1/2 cup whole wheat flour (or another 1/2 cup all-purpose flour)
1 teaspoon baking soda
1 teaspoon baking powder
1/2 teaspoon salt
2 over-ripe bananas, mashed
3/4 cup white sugar
1 egg, lightly beaten
1/3 cup oil
10 teaspoons Nutella
Instructions
Preheat oven to 375 degrees F. Grease or spray 10 muffin cups, or line with muffin papers.
In a large bowl, combine flours, baking soda, baking powder and salt. In a smaller bowl, beat together bananas, sugar, egg and oil. Add the banana mixture to the dry ingredients and mix until just moistened. Spoon batter into prepared muffin cups.
Spoon a dollop of Nutella onto each muffin and swirl together well.
Bake in preheated oven for 15-17 minutes, until a toothpick inserted into center of a muffin comes out clean.
Recipe by Tastefully Julie at http://tastefullyjulie.com/nutella-swirl-banana-muffins/