Step 1

Preheat oven to 350°F. Whisk both types of flour, flaxseed, baking soda, cinnamon, and salt together in a large bowl.

Step 2

Whisk the bananas, yogurt, eggs, oil, and vanilla together in another large bowl. Add the sugar and continue to mix until combined.

Step 3

Add the dry ingredients to the wet ingredients. Beat with a hand mixer or stir with a whisk or spatula until just combined (do not over-mix). If using any additional ingredients like nuts or chocolate chips, stir them in at this point.

Step 4

Pour the batter into a 9 x 5-inch loaf pan coated with cooking spray. Slice a banana in half lengthwise and arrange the slices on top. Bake in the oven for 50 to 55 minutes, or until a toothpick inserted into the center comes out clean. Remove from oven and cool for 10 minutes in the pan on a wire rack. Then, remove the bread and cool completely on wire rack.