
Preheat your oven to 180°C (350°F) and line a loaf tin with parchment paper.
In a large bowl, mix the mashed bananas, maple syrup, melted coconut oil, and vanilla extract until smooth.
Add the flour, ground pistachios, baking powder, baking soda, and salt. Stir until just combined—don't overmix.
In a separate bowl, mix the pistachio butter ingredients until smooth and creamy.
Pour half the banana bread batter into the tin, swirl in a few spoonfuls of pistachio butter, then repeat with the remaining batter and more pistachio butter on top.
Bake for 45–50 minutes, or until a toothpick comes out clean.
Let cool slightly, then drizzle with date syrup, more pistachio butter, and sprinkle with crushed pistachios.