Fluffy and moist banana muffins stuffed with creamy hazelnut spread (nutella) made in one bowl. This nutella banana muffin recipe is a great way to use up those ripe bananas sitting on your counter. You and your family will absolutely LOVE these easy-to-make banana muffins!
In a large bowl, cream butter and sugars together. Add bananas and the egg. Mix together until well combined. Add flour, baking powder, baking soda, and salt. Mix until just combined.
Cover the bowl with a kitchen towel and let the mixture rest for at least 1 hour. If you want to get those pretty domes, do not skip this step.
Preheat oven to 425ºF. Spray a 12 cup muffin tin with nonstick cooking spray.
Divide batter evenly into the prepared muffin tin, filling each muffin cup halfway. Add a teaspoon of Nutella in the center of each muffin cup then fill with more batter until it's 3/4 full. Add a 1/2 teaspoon of Nutella on top and swirl with a toothpick.
Place the muffin tin in the oven and immediately turn down the heat to 350ºF. The initial high heat activates the leaveners (baking soda/baking powder) to create those pretty domed muffins.
Bake for 20-22 minutes or until a toothpick inserted into the center of a muffin comes out clean. Let cool and serve. Enjoy!