Family Tree Farms - Blueberry Crumble Bars

Ingredients

• 1/2 cup unsalted butter, room temperature
• 3/4 cup granulated sugar
• 1 large egg
• 1/2 cup whole milk
• 1 tsp. baking powder
• 1/2 tsp salt
• 2 cups all-purpose flour
• 2 1/2 cups fresh blueberries
• 1 cup light brown sugar, packed
• 1 cup all-purpose flour
• 1 tsp. cinnamon
• 1/2 cup unsalted butter, cut into cubes
• 1 cup powdered sugar
• 1 lemon zested
• 1/2 lemon juiced
• 2 tbsp. honey
• 1/4 tsp. vanilla extract