3/4 c. butter
1 3/4 c. graham cracker crumbs
1/4 c. Hershey's cocoa
2 tbsp. sugar
1 (14 oz.) can sweetened condensed milk
1 c. (6 oz.) Hershey's semi-sweet chocolate chips
1 c. raisins or mini marshmallows
1 c. chopped nuts

Preheat oven to 350 degrees. In 13 x 9-inch baking pan, melt butter in oven. Combine crumbs, cocoa, and sugar; sprinkle over butter. Pour sweetened condensed milk evenly over crumbs. Sprinkle with chocolate chips, then raisins or marshmallows. Sprinkle nuts on top; press down firmly.

Bake 25 to 30 minutes or until lightly browned. Cool, cover with foil. Allow to set at room temperature about 8 hours before cutting to bars. About 36 bars.