Line the base & sides of a slice pan, allowing the sides to overhang.
Place the coconut cream, nuttelex & chocolate in a saucepan over low heat. Cook, stirring, until the chocolate & nuttelex melt & mixture is smooth. Set aside to cool slighlty.
Meanwhile, reserve 12 Itsy Bitsy Bears. Place remaining Itsy Bitsy Bears, chocolate biscuits, marshmallows & coconut into a bowl. Stir to combine.
Pour the chocolate mixture over the biscuit mixture & stir until combined.
Pour into the prepared pan & smooth the surface. Decorate with the reserved Itsy Bitsy Bears and the 100's & 1000's.
Cover with plastic wrap. Place in the fridge for 2 hours or until firm. Cut into pieces and store in air tight container in the fridge.