I made a couple of batches of my own. I just added a bit of water to a half full jar of Jiff (or whatever was on sale) and then added in vanilla protein powder and stirred. I also added a couple of packets of spenda. I did the same thing with another jar and some choc. protein powder.
Both taste very good - but not exactly like PB. The choc. one is a bit like a choc. and BP sandwich. I think it woudl be better without the splenda.
When you mix it, you need to add a bit of water and then a bit of protein powder, then water, then powder.... If you want, add some ground flax seed or some flax seed oil. It took me maybe two minutes to do a jar of it.
Cheap and easy - how can you go wrong?