2 c. brown sugar
1 c. butter
1 egg, well beaten
1 c. sour cream
1 1/2 tsp. baking soda
4 1/2 c. flour
1 tsp. baking powder
1/8 tsp. salt
1 tsp. cinnamon
1 tsp. vanilla

Mix all ingredients in order given and chill well (batter is usually sticky, so I usually have best results chilling in the freezer).

Taking a little of the dough each time, keeping remainder chilled, roll on a well-floured surface with a well-floured rolling pin. (Since dough is rich, adding flour as you roll out won't hurt the cookies.)

Cut into favorite shapes. Bake on a greased pan at 350 degrees for 10-12 minutes (hot oven: bake 325 degrees for 8-9 minutes). When edges just barely begin to brown, they're done. Frost and decorate with festive sprinkles.

FROSTING:

Powdered sugar
Milk
1 tsp. vanilla

Mix ingredients to spreading consistency.