The King enjoyed more than just peanut butter and banana:

In February 1976, Elvis Presley combined his passion for peanut butter and free spending ways and flew a party of friends in his private jet from Memphis to Denver. The purpose was to dine on a heroic peanut butter sandwich called the Fool’s Gold Loaf, a specialty of the Colorado Gold Mine Company.

This extravagant, artery-blocking sandwich consisted of an entire loaf of bread, hollowed out, spread thickly with peanut butter and blueberry jelly and filled with a pound of crisp fried bacon. The party’s “King-sized” order consisted of twenty-two Fool’s Gold Loaves, a case of champagne, and a case of Perrier for Elvis and other non-tipplers. The impressive carry-out order was delivered to the party - and consumed - at the airport. The tab for the expedition? About sixteen thousand dollars.