Preheat your oven to 180C (350F). Line a loaf pan 24cm x 12cm (approx 9in x 5in) with baking paper.
Mash bananas until smoothish or use your stick blender if they aren't ripe enough. Then add coconut oil, eggs, baking powder, cinnamon (if using) and almond meal. Mix thoroughly.
Bake for 35-45 minutes or until the loaf is golden and feels springy when you touch it.