¾ cup (150 grams) mashed bananas (about 2 medium bananas)
1 large egg (50 grams)
2 teaspoons (8 grams) vanilla extract
1⅔ cups (208 grams) all-purpose flour
1½ teaspoons (7.5 grams) baking powder
1 teaspoon (2 grams) ground cinnamon
½ teaspoon (1.5 grams) kosher salt
¼ teaspoon (1.25 grams) baking soda
½ cup (120 grams) sour cream
¼ cup (60 grams) whole milk
¾ cup (85 grams) chopped raw hazelnuts
Hazelnut Streusel (recipe follows)
Instructions
Preheat oven to 375°F (190°C). Spray a 12-cup muffin pan with baking spray with flour.
In a large bowl, place melted butter. Whisk in sugar, mashed bananas, egg, and vanilla until combined.
In a medium bowl, whisk together flour, baking powder, cinnamon, salt, and baking soda. Whisk flour mixture into butter mixture. Add sour cream and milk, whisking just until combined. Fold in hazelnuts. Divide batter among prepared muffin cups. Sprinkle with Hazelnut Streusel.
Bake until a wooden pick inserted in center comes out clean, 15 to 20 minutes. Let cool in pan for 10 minutes. Remove from pan, and serve warm or at room temperature.
Recipe by Bake from Scratch at https://staging.bakefromscratch.com/hazelnut-banana-sour-cream-muffins/