This sandwich is another recipe developed by Libby's to incorporate pumpkin into ordinary food. The late Elvis Presley was a big fan of peanut butter and banana sandwiches, and so the sandwich is named for him. It mixes peanut butter with pumpkin, which cuts the fat and adds fiber and vitamins, and adds bananas. We all liked it, some more than others. I used cinamon swirl bread left over from the pumpkin bread pudding I made earlier in the week. The peanut butter/pumpkin mixture could also be used with jam, jelly or honey, if you're not a big banana fan or don't like them in sandwiches. I had the leftovers on my English muffin for breakfast.