Flourless Chocolate Chewy Cookies

INGREDIENTS

3 cups

powdered sugar

2/3 cup

unsweetened cocoa powder

1/4 tsp

salt ((Not Kosher salt))

large egg whites (, room temperature)

2 tsp

vanilla extract

1 tsp

espresso powder ((optional, but makes a huge difference in the intensity of flavor))

2 cups

dark chocolate chips ((you can also substitute your favorite kind of chocolate chip))

Flaky sea salt (, optional but a delish finish to the cookies)