Cake: Mix all ingredients together ... a well greased sheet cake pan. Bake at 375 ... heat; stir in chocolate pieces until smooth. Pour over warm bars.
Mix together sugar, flour and ... floured deep cookie sheet (11"x12") at 350 degrees for ... until done. While cake is baking, prepare topping. Combine ... as cake is done.
Sift flour and sugar into ... and floured 11"x16" sheet pan. Bake at 350 degrees ... 2 minutes. Add chocolate chips, nuts and marshmallows. Blend ... spread on warm cake.