2 c. sugar
1 c. evaporated milk
1/2 c. butter
1 (6 oz.) pkg. chocolate chips (1 c.)
3/4 c. flour, sifted
1 c. graham crackers, finely crushed
3/4 c. walnuts, chopped
1 tsp. vanilla

Combine sugar, milk and butter in pan; bring to rolling boil for 10 minutes, stirring occasionally. blend in chocolate chips, flour, cracker crumbs, nuts and vanilla. Mix well. Pour in buttered pan, cool and cut in squares.