1 lb. butter
1 (2 lb.) bag brown sugar
1 (16 oz.) bottle corn syrup
2 cans condensed milk (14 oz. each)
2 tsp. vanilla

Melt butter, add sugar, stir in corn syrup and mix well. Gradually add milk stirring constantly, cook and stir over medium heat until candy reaches firm ball stage, 245 degrees. Remove from heat and add vanilla. Pour onto well buttered jelly roll pan. Cool and turn out of pan. Wrap pieces into wax paper squares. Can be frozen.