cream butter and suger and vanilla mix well till fluffy. add syrup and continue creaming. Beat in eggs and chocolates. Sift together in all dry ingredients stir intio batter.Fold in chocolates pieces and walnuts.Spread in greased 9 by 9 inch baking dish bake in 350 oven for about 25 minutes then drop oven temperature to 200 and bake it again for 10 minutes then take it out from oven cool it and cut it into square pieces. serve with tea or coffee..