1⅛ cups (255 grams) mashed banana (about 3 medium bananas)
¾ cup (150 grams) granulated sugar
2 large eggs (100 grams)
⅓ cup plus 2 teaspoons (85 grams) canola oil
¼ cup (60 grams) whole milk
1 teaspoon (4 grams) vanilla extract
½ cup (128 grams) Nutella
Chocolate Hazelnut Streusel (recipe follows)
Instructions
Preheat oven to 325°F (170°C). Lightly spray an 8½x4½-inch loaf pan with cooking spray. Line pan with parchment paper, letting excess extend over sides of pan.
In a medium bowl, whisk together flour, salt, baking soda, and baking powder. In a large bowl, whisk together mashed banana, sugar, eggs, oil, milk, and vanilla. Fold in flour mixture just until combined.
In a small microwave-safe bowl, heat Nutella on high in 2 (15-second) intervals, stirring between each. Spoon half of batter into prepared pan; spoon half of warm Nutella over batter. Top with remaining batter and remaining Nutella; swirl together using a knife. Top with Chocolate Hazelnut Streusel.
Bake until a wooden pick inserted in center comes out clean, about 1 hour and 25 minutes. Let cool in pan for 10 minutes. Remove from pan, and let cool completely on a wire rack.
Recipe by Bake from Scratch at https://bakefromscratch.com/nutella-banana-bread/