1/4 c. butter
1 c. brown sugar
1 c. granulated sugar
3/4 c. sour cream
1 tsp. vanilla
3/4 c. nuts

Melt butter in heavy saucepan, add both sugars and sour cream. Cook over low heat, stirring until sugar dissolves. Cover and boil slowly 5 minutes. Uncover and cook rapidly without stirring until soft ball forms. Remove from heat and cool slightly. Add vanilla and nuts and beat until creamy.