Assorted colors of decorating gels and yellow colored sugar
Directions:
MIX cereal and cookie crumbs in large bowl; set aside.
PLACE margarine and marshmallows in large saucepan; cook on medium-low heat until margarine and marshmallows are completely melted and mixture is well blended, stirring constantly. Remove from heat. Pour over cereal mixture; mix well. Press firmly into greased 14-inch pizza pan; sprinkle with chocolate chips. Press chips gently into cereal mixture; cool completely.
SPREAD frosting evenly over cereal crust to within 1 inch of edge. Decorate with gels to resemble a haunted mansion and moon shape; sprinkle with colored sugar. Cut into 16 wedges to serve.
