I say blended frozen dessert because not all of the competing chains sell a frozen treat that qualifies as ice cream. The success of an OBFD (because Oreo blended frozen dessert is a brain freeze ...

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 ...

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.