Lauren's Sugar Cookie Recipe

Lauren got this recipe from Marissa M a girl she worked with, they are soft and yummy!
1 cup butter softened
2 cups sugar
2 eggs
2 tsp. vanilla
1 cup sour cream
6 cups flour
2 tsp. baking soda
1 tsp. salt
Cream butter, sugar, eggs, vanilla and sour cream. Add dry ingredients, roll out (not to thin) and cut in shapes. Bake at 350 for 8-10 minutes dough doesn't need to be refrigerated before using.