In a mixing bowl, whisk all the dry ingredients together: Flour, baking powder, baking soda, cinnamon and sea salt. Set Aside.
In another mixing bowl, cream the butter and sugar together on medium high speed for about 2 minutes. Add the egg, the mashed bananas and buttermilk. Then, combine the dry ingredients. IMPORTANT: Do not over mix.
Pour your batter into your Flexipan®. Evenly spread with your spatula.
BAKE!
Bake for 35 minutes at 350F/180C. (Every oven heats differently, monitor your cake from 30min).
Once your Buttermilk Banana Bread is out of the oven, wait about 10 minutes before unmolding directly onto your serving plate. Enjoy & Bon Appétit!