01 -
In a mixing bowl, combine powdered sugar, cocoa powder, and salt. Stir until evenly mixed.
02 -
Add egg whites and vanilla extract to the dry mixture and stir until a smooth dough forms.
03 -
Fold in mini chocolate chips and mini marshmallows until evenly distributed throughout the dough.
04 -
Use a cookie scoop to drop dough onto parchment-lined baking sheets, spacing them evenly.
05 -
Bake in a preheated oven at 350°F (175°C) for 10 minutes, until cookies are puffed and crackled.
06 -
Allow cookies to cool on the baking sheets for 10 minutes before transferring to a wire rack to cool completely.