Heat first 4 ingredients in large saucepan, on lowest heat, stirring often until chocolate chips are almost melted. Do not overheat. Remove from heat and stir. Add icing sugar and stir until smooth. Measure cereal into a large bowl. Add chocolate mixture. Stir until coated. I used the festive Rice Crispies to add some colour, but you really don't notice the colour that much in the final cookies. Press firmly into greased 9x9 pan. Let stand until firm. Cut into 36 squares. I refrigerated to make them easier to cut into squares.

Reprinted from Chocolate Squared © Company's Coming Publishing Limited