In most Pipers/Cessnas a stall on base/final turn config isn't going to dump you straight into a spin. Low speed, high nose, 20deg bank with flaps the picture is going to be completely wrong and the stall warner will (or should) be blaring way before anything untoward happens. However if you ignore all the above, the high wing can drop and it most likely won't be a nice gentle drop, it'll be sudden and surprising but still gives you an opportunity to recover before it all goes pear-shaped.
The same recovery is required as for any stall - controls centrally forward, full power, rudder to prevent further yaw. Don't be trying any of that "pick the wing up with rudder" bollocks. If you don't do anything about the drop (or do the wrong thing) that's when you're into spin territory. A quickly recovered wing-drop on base/final turn will probably not kill you, a spin probably will. If you've ever managed to drop a wing unintentionally in the average Piper/Cessna you're doing something seriously wrong.
As mentioned by many other wise and experienced posters, do it with an instructor. From a sensible altitude. It's worth it, and probably very different to how you might perceive it.