The brief meeting -- just under half an hour at the Vatican -- was the latest stop for the royal couple on a charm offensive that started in Romania last week and ends in Austria tomorrow.
It also follows a visit by Charles's son Prince William and his wife Kate to Paris in March.
At the Vatican, Charles presented the 80-year-old pontiff with a collection of products from his Highgrove estate, where the prince indulges his passion for organic farming.
"It may come in handy or somebody else might like it -- it's all homemade things I produced."
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Camilla then chipped in: "It's very good."
The pope gave the couple a bronze of an olive branch, telling the prince, "Wherever you may go, may you be a man of peace."
Charles replied: "I'll do my best!"
The pope also gave them copies of the three major texts he has produced since becoming pope just over four years ago
Laughing, Charles asked: "Are they in English?"
When the pope confirmed they were, he added: "You are very generous -- a great treat."
Camilla also attracted favourable coverage for her various visits, including one without her husband to an NGO helping the victims of human trafficking.
She also won over the locals in Florence by recalling her childhood ties to the city, where the visit began with a sundown stroll over the Ponte Vecchio on Friday.