Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      cups          baker's semi-sweet chocolate chips -- 500g
     1/2  cup           margarine
     1/2  cup           corn syrup -- 125g
   2      teaspoons     vanilla -- 10ml
   1      cup           confectioner's sugar -- 250g
   4      cups          rice krispies® cereal -- 1000ml

Preparation:

Melt together chocolate chips, butter and corn syrup over low heat. Remove from heat add vanilla. Stir in icing sugar until smooth. Add cereal and mix thoroughly. Spread into lightly greased 9 X 13" pan chill until set. Cut into squares.