Grandmother Gorman’s Butterscotch Refrigerator Cookies

½ cup butter, soft

2 cups brown sugar

2 eggs, beaten

½ teaspoon vanilla

3 ½ cups sifted flour

¼ teaspoon salt

½ teaspoon baking soda

½ teaspoon cream of tartar

 

Beat butter, brown sugar, eggs, and vanilla until very light and fluffy! Sift all dry ingredients together and gradually mix into the butter mixture.   Turn dough out onto wax paper. Roll into a log and chill.  Slice cookies into thin slices and bake on an ungreased cookie sheet in a 375-degree oven for about 9 minutes. Remove at once to cool. Store in an airtight container.