Beat egg whites for 1 minute on medium speed. Add cream of tartar.
Slowly add sugar, beating on medium-high. Beat until stiff peaks form. (Whisk attachment should leave stiff peak and mixture should look glossy).
Add vanilla and peppermint extract extract and beat to combine.
Color meringue with green and red (pink) or any other color of your choice.
Fill a pastry bag (use a tip of your choice like open or closed star tip, I just cut off the tip of the bag for these cookies) with the meringue mixture.
Line baking sheets with parchment paper and pipe 1/2 to 1-inch cookies, leaving space between them.
Bake at 175 F for 1 hour and 30 minutes and then let cookies cool inside the oven.