1 (12 oz.) pkg. semi-sweet chocolate pieces
1/4 c. butter
2 1/2 c. graham cracker crumbs
1 1/2 c. chopped walnuts
1 (14 oz.) can sweetened condensed milk
1 tsp. vanilla extract

Early in day: In double boiler over hot, not boiling, water, melt chocolate and butter until smooth, stirring occasionally. Meanwhile grease well 12 x 8 inch baking dish.

In large bowl, combine graham cracker crumbs and walnuts; stir in condensed milk and vanilla extract until crumbs are moistened; then stir in chocolate mixture until mixed. Pat evenly into baking dish. Let stand at room temperature about 2 hours before cutting. Makes 24 brownies.