1/2 cup margarine 4 Mars chocolate bars cut into pieces. 3 cups of Rice Krispies 2 tbsp margarine 4 Jersey Milk chocolate bars (OR 1 cup chocolate chips) In saucepan melt 1/2 cup margarine and bars. Mix in Rice Krispies. Pour in 8x8 pan greased well. In saucepan melt 2 tbsp margarine and bars (OR chocolate chips) and pour over base. Cool and cup squares.