4 1/2 c. sugar
1 can evaporated milk

Blend and bring to a hard boil. Stir constantly reduce heat and boil hard for 6 minutes. Remove from heat, add 2 sticks butter and 3 (6 oz.) pkg. chocolate chips and 3 teaspoons vanilla. Stir and pour in buttered pan (broiler pan). Let stand 6 hours and cut.