Melt chocolate pieces and butter over hot (not boiling) water. Beat
eggs until light and fluffy; gradually beat in sugar. Stir in oats,
baking powder, salt, vanilla, walnuts and chocolate pieces.
Pour batter into greased 8-inch square baking pan. Bake in preheated
moderate oven (350 F.) 30 to 35 minutes. Cool; cut in squares.
Sprinkle with confectioners' sugar, if desired.
Source: Our Favorites for family and friends Reprinted with
permission from The Quaker Oats Company Electronic format courtesy of
Karen Mintzias