Hershey Kiss Cookies

Bahan-bahan (48 porsi)

• 1 cup unsalted butter (softened)
• 1 cup granulated sugar
• ⅓ cup brown sugar
• 1 egg (room temperature)
• 1 egg yolk (room temperature)
• 1 teaspoon vanilla extract
• 2 cups all-purpose flour
• ⅔ cup unsweetened cocoa powder
• ½ teaspoon baking soda
• ¼ teaspoon salt
• 48 chocolate kisses (unwrapped)
• 2 tablespoons granulated sugar (or sprinkles, for rolling, optional)