Blueberry Buckle

Bahan-bahan (9 porsi)

• ¾ cup granulated sugar
• ¼ cup butter (softened)
• 1 egg
• 2 teaspoons lemon zest
• 1 ½ cups all-purpose flour
• 2 teaspoons baking powder
• ½ teaspoon salt
• ½ cup milk
• 1 tablespoon all-purpose flour
• 1 ½ cups fresh blueberries
• ¼ cup butter (+ 1 tablespoon, cold)
• ¼ cup brown sugar
• ¼ cup granulated sugar
• ⅓ cup all-purpose flour
• ½ teaspoon cinnamon