1 3/4 c. unsifted flour
3/4 c. powdered sugar
1/4 c. Hershey's cocoa
1 c. cold butter
12 oz. pkg. semi-sweet chocolate chips
14 oz. can sweetened condensed milk
1 tsp. vanilla
1 c. chopped nuts

Preheat oven to 350 degrees. Combine flour, sugar, and cocoa; cut in butter until crumbly. Press into 9x13 pan. Bake 15 minutes.

In saucepan melt 1 cup chips with sweetened condensed milk and vanilla. Pour over crust. Top with nuts and remaining chips. Press down firmly. Bake 20 minutes or until set. Cool. Cut into bars.