Instructions: Preheat oven to 350 degrees Beat egg whites until stiff. Mix powdered sugar and cocoa together in a bowl.

Gradually add vanilla and powdered sugar mixture (one quarter of the sugar at a time) to the egg whites, beating for only a few seconds on low speed until powdered sugar is incorporated. Hand fold in the walnuts.

Place one teaspoon of meringue mixture onto cookie sheet covered in parchment paper and bake for 13-15 minutes. The cookies will puff up.

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