Caramel 'SQUARES' Sugar Cookies with Chocolate Drizzle

Ingredients

• 2/3 cup unsalted butter, softened
• 3/4 cup granulated sugar
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1 large egg
• 1 tablespoon milk
• 1 teaspoon vanilla extract
• 2-1/4 cups all-purpose flour
• 16 Ghirardelli Milk & Caramel SQUARES Chocolate
• 1/4 cup Ghirardelli 60% Cacao Bittersweet Chocolate Baking Chips
• 1 teaspoon shortening
• 1/3 cup Ghirardelli Unsweetened Cocoa (optional)