Ingredients:
3 cups powdered sugar
½ cup plus 3 tablespoons unsweetened cocoa powder
¼ teaspoon salt
2 ½ cups chocolate chips (I’d suggest using less, maybe 1 or 2 cups depending on your preference)
4 egg whites, room temperature
1 tablespoon vanilla extract
Directions:
1. Preheat oven to 350˚F. Line 2 large baking sheets with parchment paper.
2. Mix sugar, cocoa, and salt in a bowl. Stir in chocolate chips. Add egg whites and vanilla; beat with electric mixer on high for 2 minutes, until a light stiffness forms.
3. Drop batter by teaspoonful onto baking sheets in evenly spaced mounds. Bake cookies until tops are lightly cracked and glossy, about 15 minutes. Cool briefly before carefully removing cookies from parchment paper with a spatula. Cookies may be soft and fragile, so proceed carefully to lift cookies and place them on racks to cool completely. Do not wait too long to remove them from baking sheets, for they will stick, even to parchment paper.
(recipe source: The Café Sucré Farine)