Melt the semisweet chocolate chips and let it cool down to room temperature.
Meanwhile, using an electric mixer beat the egg whites and sugar on medium-high speed until it becomes a stiff, fluffy consistency.
Then add in the vanilla extract, chocolate, and walnuts and stir just to combine.
Line a cookie sheet with nonstick foil and scoop out 1 tbsp-sized scoops of the cookie batter onto the baking sheet.
Bake the cookies 12 minutes at 350 degrees Fahrenheit.
