Ingredients
- 3 cups (360 grams) all-purpose flour
- 1 Tablespoon (14 grams) baking powder
- 1/2 teaspoon salt
- 1/4 teaspoon freshly grated nutmeg
- 1/4 teaspoon ground cinnamon
- 1/2 cup (113 grams) unsalted butter, melted and slightly cooled
- 1/2 cup (106 grams) light brown sugar, packed
- 1/2 cup (99 grams) granulated sugar
- 2 large eggs, at room temperature
- 2 teaspoons pure vanilla extract
- 3/4 cup (170 grams) full-fat sour cream
- 1 cup (227 grams) mashed ripe banana
- 1 pint (292 grams) fresh blueberries
- 1/2 cup toasted walnuts, finely chopped
- 2 Tablespoons sparkling sugar, optional