1/2 c. butter
1 1/2 c. dark brown sugar
2 eggs
1 (8 oz.) carton sour cream
1 tsp. vanilla
2 3/4 c. plain flour
1/2 tsp. baking soda
1/2 tsp. salt
1 c. coarsely chopped pecans

Mix butter and brown sugar well; beat in eggs and add sour cream and vanilla. Stir flour and spoon lightly into cup to measure. Add baking soda and salt to flour and mix well; combine with first mixture. Mix in pecans. Drop by teaspoon onto greased cookie sheet. Bake 8-10 minutes at 350 degrees. Cool slightly before frosting.

FROSTING:

1/4 c. butter (no substitutes)
1 1/2 c. powdered sugar
1/2 tsp. vanilla
Cold water (about 2 tbsp.)
Pecan halves for garnish

Heat butter in small skillet, stirring constantly until dark golden brown. Allow to cool, add sugar and vanilla, mixing thoroughly. Add water by drops until frosting reaches good spreading consistency. Spread on cookies and top with pecan half.