Lemon Sugar Cookies

1 cup Butter (softened)
1 cup White sugar
1/2 tsp Salt
1 large Egg
1 Egg yolk
2 tbsp Lemon juice
1 tsp Vanilla extract
4 cups Flour
1/3 cup Red colored sugar
1/3 cup Green colored sugar

In large mixing bowl, beat the butter, sugar and salt until fluffy. Beat in egg, egg yolk, lemon juice and vanilla extract until well blended. With a mixer on low speed, slowly add in flour. Divid dough in half. Wrap halves in plastic wrap and chill at least 3 hours. Roll dough to 1/8 inch thickness. Cut with cookie cutters, decorating with red or green colored sugar. Bake at 350 degrees F on well-greased cookie sheets for approx. 12 minutes or until just lightly golden brown around edges. Cool cookies on wire racks.