Fat grams per serving: Approx. Cook Time: :30 Preheat oven to 120ºC . Beat margarine and brown sugar till light and fluffy. Add flour and walnuts; mix well. Reserve half cup crumb mixture; press remaining crumb mixture into bottom of 20 cm sqaure pan. Bake at 180ºC for 10 minutes. Combine cream cheese (nuke for 15 seconds), garnulated sugar and vanilla; mixing at medium speed and electric mixer till well blended. Add egg; mix well. Layer half cup Smarties or M&Ms over crust; top with cream cheese mixture. Combine remaining candy, chopped and reserve crumb mixture; mix well. Sprinkle crumb mixture over cream cheese mixture. Bake at 180ºC , 20 minutes. Cool.