This is one of my favorite cookies. I've made these every year around Christmas for at least the last 5 years. The white meringues make me think of winter. I love how they melt in your mouth.
3 egg whites
1/4 tsp cream of tartar
3/4 cup white sugar
1/2 tsp vanilla
1 cup semi-sweet chocolate chips
Heat oven to 200 degrees F. Line baking sheets with parchment paper. In a large bowl combine egg whites and cream of tartar. Beat on high speed. Add sugar, 1 Tablespoon at a time. Beat until peaks form. Add vanilla. Beat 1 minute. Fold in chocolate chips. Drop by teaspoonfuls. Bake 2 hours or until meringues are dry. Rotate baking sheets half-way through. Turn off heat and leave in oven 2-4 hours until dry.