Ingredients
2 cups fresh blueberries
2 cups all-purpose flour, divided
1 cup sugar, plus 1 tablespoon
1 large egg, room temperature
1/2 cup buttermilk
1/2 cup (1 stick) unsalted butter, softened
2 tablespoons lemon zest
2 teaspoons baking powder
1 1/2 teaspoon vanilla extract
1 teaspoon salt
1/2 teaspoon cinnamon, optional
