Best Lemon-Blueberry Blondies Recipe - How To Make Lemon-Blueberry Blondies

Ingredients

• Cooking spray
• 1 1/2 c. (320 g.) packed light brown sugar
• 3/4 c. (1 1/2 sticks) unsalted butter, melted, slightly cooled
• 2 tsp. pure vanilla extract
• 1 tsp. finely grated lemon zest
• 1 tsp. baking powder
• 1/2 tsp. kosher salt
• 2 large eggs, lightly beaten
• 1 1/2 c. (180 g.) all-purpose flour
• 1 c. fresh blueberries, divided
• 1 c. (115 g.) powdered sugar
• 1 tbsp. fresh lemon juice