Preheat oven to 375°F for 15 minutes.
Beat egg whites until stiff. Gradually add sugar until thoroughly mixed. Fold in chocolate.
Line a cookie sheet with parchment paper or use a silicone baking sheet. Drop mixture by teaspoonfuls onto lined cookie sheet, spacing cookies 2 inches apart.
Place cookie sheet in oven and turn oven off. Leave cookies in oven (without opening the oven door!) until oven has completely cooled.
Makes about 2 dozen.
Submitted by: CM