Place all Group 1 ingredients in mixing bowl and blend together with beater. Spread Group 1 evenly on a clean standard baking tray. Place Group 2 ingredients in mixing bowl and blend together with beater. Spread evenly on prepared base from Group 1. Topping: Place Group 3 in a saucepan over heat. Do not over heat. Pour over prepared base and filling. Spread evenly. Do not refrigerate. Cut the next day to desired shapes.
The metric recipe is of similar size to the avoirdupois recipe but is not an exact conversion.