Step 1

Preheat oven to 350ºF. Prepare two loaf pans by greasing it or lining them with parchment paper (allowing an overhang on sides). With a fork, beat together mashed banana, zucchini, melted butter, buttermilk and eggs in a large bowl until combined.

Step 2

In a separate bowl, whisk together flour, sugar, baking powder, baking soda and salt. Add to banana mixture and gently stir until just combined.

Step 3

Bake for about 55 minutes, until toothpick inserted into the centre comes out clean and top feels springy. Cool for about 5 minutes in pans, then invert into an oven mitt and flip onto wire cooling racks to cool completely before slicing.