Interesting recipe. And it turned out very good. If you like Nutella and banana bread, can't miss it!
2 cups flour
3/4 tsp baking soda
1/2 tsp salt
1/4 cup butter, softened
1 cup sugar
1&1/4 cup mashed bananas
1 tsp vanilla
1/3 cup milk
3/4 cup Nutella
Preheat oven to 350 degrees. Spray 8*4-inch loaf pan with nonstick spray.
In a bowl, whisk together flour, baking soda and salt.
In a separate large bowl, beat sugar and butter with an electric mixer at medium speed until blended. Add eggs, one at a time. Add banana, milk, and vanilla, beat well. Add flour mixture, beat at low speed just until blended.
Spoon Nutella into a small dish and soften in microwave for 15 seconds. Add 1 cup of banana batter to Nutella and stir well. Spoon Nutella batter with banana batter alternatively to the prepared loaf pan. Swirl batters with a knife.
Bake for 1 hour. Cool before serving.