Pipe 10 rosettes around the top of the ice cream cake and place a whole Oreo in each one. Serve straight away and enjoy. Line the base of a 23cm loose bottom round baking tin with parchment paper.
Dot a little more peanut butter over the surface, then use a knife or skewer to ripple through the ice cream. Crush the remaining Oreos and sprinkle over the top, then cover the ice cream cake ...