Gluten Free Cut Out Sugar Cookies

0 Combine sugar and butter in a mixing bowl. Beat at medium speed until creamy.
1 Add egg yolks and vanilla extract. Continue beating, scraping the edges as needed.
2 Gradually add flour and salt. Beat at low speed until well mixed and a dough is formed.
3 Cover and refrigerate 1 hour or until firm.
4 Heat oven to 350°
5 Roll out half of the dough at a time, keeping the other half refrigerated so it doesn't soften.
6 Spread dough to 1/4 inch thickness, then cut with cookie cutters. Place on ungreased baking sheets.
7 Bake 8-10 minutes until edges are lightly browned.
8 Let cool completely before frosting.