Pepperoncini Pot Roast {Crock Pot Recipe}.  First, let me say that this is a fabulous Pot Roast recipe without doing any work.  Place the roast in your crock pot, sprinkle with garlic powder, salt & pepper, pour in a jar of pepperoncini peppers – liquid and all, set it on low for 8 – 10 hours, and go about your business.