Preheat oven to 350°. Grease the bottom and sides of a loaf pan. Set aside. Combine flour, baking powder, baking soda, salt, cinnamon and nutmeg in a large bowl. Make a well in the center of flour mixture then set it aside.
In a medium bowl, combine the beaten 2 eggs, mashed bananas, sugar, oil/butter and nutella. Add the egg mixture into the well of the flour mixture bowl. Stir the whole thing until moistened. The batter should be lumpy.
Transfer the batter into the greased loaf pan. Bake it in the oven for 55-60 minutes. In the last 15 minutes of baking, loosely cover the pan with a foil to avoid over browning the top.
To make sure it’s done baking, insert a toothpick in the middle. If it comes outs clean then it’s done. Cool the banana bread in pan on top of a wire rack.