2 cups all-purpose flour
3/4 teaspoon baking soda
1/2 teaspoon salt
1/4 cup unsalted butter, softened to room temperature
1 cup granulated sugar
2 large eggs
1 1/2 cups mashed ripe banana (3-4 bananas)
1/3 cup plain low fat yogurt
1 teaspoon vanilla extract
3/4 cup Nutella
Preheat oven to 350F. Spray 8×4-inch loaf pan with nonstick spray.
In a medium 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 well blended. Add eggs, one at a time, beating well after each addition. Add banana, yogurt and vanilla; beat until blended. Add flour mixture; beat at low speed just until flour is incorporated (don’t over mix).
Spoon Nutella into a medium dish and soften in the microwave for about 15 seconds. Add 1 cup of the banana bread batter to the Nutella and stir until blended well. Spoon Nutella batter alternately with plain banana bread batter into the prepared pan. Swirl batters together with a knife.
Bake 60 to 70 minutes, or until toothpick inserted into the center comes out clean. Check the oven at 45 minutes to check the top of the bread for browning. If it’s browning too quickly, cover lightly with foil for the remainder of the baking. Cool for at least 15 minutes in the pan, and then turn out onto a wire rack to cool completely.