• Preheat oven to 350 degrees
• Cover a cookie sheet with parchment paper and set aside
• Using a standing mixer, cream together the butter, powder sugar, vanilla and egg and mix until combined and creamy
• Using a large bowl, combined the flour, baking soda and cream of tarter
• Gradually add in the dry ingredients and mix on low speed
• Using your hands continue to mix until fully combined
• Lightly flour a cutting board and knead the cookie dough a couple of times
• Roll out the dough to about 1/2 inch thick
• Cut out 12 circles and place onto a cookie sheet
• Bake for 8 minutes or until lightly golden brown
• Repeat steps until completely out of dough
• Let cookies cool completely

Royal Icing:

• Using the standing mixer, combine the egg whites, cream of tarter, vanilla and powder sugar and mix until combined and stiff peaks form
• Scoop 1 C of icing into another bowl and mix in a few drops of black gel coloring. Add in a few more drops of black to get the shade you want.
• Scoop some white icing and black icing into the piping bags and set aside
• Add in a few tablespoons of water into the remaining white icing and mix until combined
• Pour the white icing into the squeeze bottle
• Using the white piping bag, pipe a outline around the cookies
• Fill in with the thinner white icing
• Let cookies dry overnight
• Using the black piping bag, pipe the detail of Jack Skellington's eyes onto the cookie and fill in
• Pipe a line for a smile onto the bottom part of the cookie
• Pipe small lines for stitching onto the line for the smile
• Let cookies dry for an hour before enjoying.