Easy Bake Lemon Blueberry Joyful Delight

Ingredients

• 1 ½ cups (190g) all-purpose flour
• 1 tsp baking powder
• ½ tsp baking soda
• ¼ tsp salt
• ½ cup (115g) unsalted butter, softened
• 1 cup (200g) granulated sugar
• 2 large eggs
• 1 tsp pure vanilla extract
• 1 tbsp lemon zest (from about 1 lemon)
• ½ cup (120ml) buttermilk
• 1 cup (150g) fresh blueberries (or frozen, if using, do not thaw)
• 1 cup (120g) powdered sugar
• 2 tbsp fresh lemon juice
• 1 tsp lemon zest