Preheat oven to 170 degrees. Whip egg whites on high speed and gradually add in the sugar. Add in the cream of tartar and vanilla, whip until stiff peaks form and it is glossy white.
Take about a cup of the meringue and mix it with the maraschino cherries until combined. Fold into the rest of the meringue.
Pipe out 1 inch swirls with a open star tip 1 inch apart. Decorate with sprinkles if desired. Bake for 2 hours and then turn off the oven and let cool inside. About 1 hour. Serve and enjoy!