"Tossing the blueberries with a bit of flour keeps them from sinking during baking. When making streusel, squeeze the mixture into large crumbs so it forms a crisp topping as it bakes instead of melting into the batter...."
INGREDIENTS
•
1 cup all-purpose flour
•
1/2 cup packed light-brown sugar
•
1/4 teaspoon salt
•
1/2 cup (1 stick) cold unsalted butter
•
4 tablespoons unsalted butter, softened, plus more for pan
•
1 1/2 cups all-purpose flour (spooned and leveled), plus more for pan
•
1 1/2 teaspoons baking powder
•
1/2 teaspoon baking soda
•
1/4 teaspoon salt
•
1/4 teaspoon allspice
•
3/4 cup granulated sugar
•
1 large egg
•
2/3 cup low-fat buttermilk, well shaken
•
1 1/2 cups blueberries
•
Confectioners' sugar, for dusting