Ingredients:

• 2 1/2 cup powdered sugar
• 3/4 cup unsweetened cocoa powder
• 1/4 teaspoon kosher salt
• 4 cold large egg whites
• 1/2 teaspoon pure vanilla extract
• 1 1/2 cup chocolate chips

Directions:

• Preheat oven to 350° and line two baking sheets with parchment paper and very lightly grease with cooking spray. In a large bowl, combine powdered sugar, cocoa powder, and salt.
• Stir in egg whites and vanilla then add chocolate chips. For shinier cookies, rest dough at room temperature for 20 minutes. Scoop tablespoon-size mounds onto prepared baking sheets and bake until set, 10 to 12 minutes.
• Let cool for about 5 minutes on baking sheet then carefully transfer cookies to a cooling rack with a spatula to cool completely.