Heat oven to 350° (mod.).
Blend sugar, butter, and milk in saucepan.
Bring just to a boil, stirring constantly.
Cool 5 min.
Measure flour by dipping method or by sifting.
Blend flour, salt, baking powder, and soda.
Beat eggs into butter mixture.
Add flour mixture; mix thoroughly.
Stir in chocolate pieces and nuts.
Spread in greased and floured oblong pan, 13x 9 1/2x2".
Bake 25 min.
Cool; cut in 2x1" bars.