Preheat oven to 350ºF. Line a 9×5″ loaf pan with parchment paper, and lightly coat with oil.
In a large bowl, combine the wet ingredients; mashed banana, eggs, tahini, molasses, coconut sugar or maple syrup, butter or oil, and vanilla; stir and whisk to combine.
Add the dry ingredients; almond flour, oat flour, pumpkin pie spice, cardamom, baking powder, baking soda, and salt; stir with a rubber spatula until combined with the wet ingredients.
Pour batter into the prepared baking pan. Sprinkle evenly with sesame seeds and place the whole peeled banana on top.
Bake the banana bread loaf for 50 to 55 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan on a wire rack for at least 15 minutes. Remove loaf from pan and allow it to cool completely before slicing.(about one hour).