Preheat oven to 180 degrees celsius.
In a bowl, whisk coconut oil and honey until light and fluffy.
Whisk in eggs one at a time.
Add in bananas, vanilla extract, ginger and turmeric.
In another bowl combine spelt, baking soda, cinnamon, salt and walnuts.
Add dry ingredients to the wet mixture and mix until just combined. Add coconut milk if the mixture is too dry or stiff to stir.
Pour into a greased and lined loaf tin.
Optionally, slice a banana in half, and press into the top of the mixture. Sprinkle coconut sugar and cinnamon on top.
Bake for 35 to 40 minutes or until skewer comes out clean.
Allow to cool in tin before removing to completely cool on a wire rack.