1 c. unsifted plain flour
3/4 c. sugar
1/2 c. cold butter

Combine flour and sugar. Cut in butter until crumbly. Press into a 9 x 13 inch pan. Bake at 350 degrees for 15 minutes.

TOP:

1/4 c. flour
1/2 tsp. baking powder
1/4 c. cocoa
1 can sweetened condensed milk
1 egg
1 tsp. vanilla
8 oz. chocolate chips
1 c. chopped nuts