Instructions

1. Preheat the oven to 350ºF. Line a loaf pan with parchment paper.
2. In a large bowl, combine the mashed bananas with the melted butter, stirring to combine. Mix in the eggs, greek yogurt, and vanilla. Set aside. In a separate bowl, combine the flour, baking soda, salt, and sugar. Fold the dry ingredients into the wet.
3. Pour half of the batter into the prepared loaf pan. Melt Nutella in microwave for 20 seconds. Drizzle half of Nutella over batter, gently swirling the batter with a knife to form ribbons of Nutella. Pour the second half of the batter on top and repeat with remaining Nutella. Bake for 45 minutes, or until a knife inserted in the center comes out clean. Allow to cool for 15 minutes before removing from loaf pan.