1 c. butter
1 lb. brown sugar
1/2 c. white sugar
4 eggs
1 tsp. vanilla
2 c. flour
1 c. walnuts

Combine butter and brown sugar in large saucepan. Cook over medium heat, stirring occasionally until butter is melted. Remove from heat and stir in sugar. Add eggs, one at a time, then vanilla. Stir in flour and add walnuts. Pour into greased 9 x 13 pan and bake at 350 degrees for 40 minutes.