Prep Time 15 minutes mins
Cook Time 55 minutes mins
Resting Time 20 minutes mins
Total Time 1 hour hr 30 minutes mins
For best results, use very ripe bananas with plenty of brown spots, as they add both sweetness and moisture to the loaf; avoid overmixing the batter once you add the dry ingredients to keep the crumb tender, and if the top starts to brown too quickly, tent the loaf loosely with foil for the last 10–15 minutes of baking. Lightly warming the Nutella makes swirling easier without dragging the batter, and letting the bread cool fully before cutting helps it slice cleanly and keeps the Nutella ribbons from smearing. You can store the cooled loaf tightly wrapped at room temperature for 2–3 days, or freeze individual slices wrapped well for quick future snacks.