Traditionally, piquillos are stuffed with either seafood or meat, but their uses extend far beyond. Swap them in wherever you would use regular roasted red peppers for a deeper, more intense flavor. Try them slivered on a salad or layered onto a sandwich. They can be blended for pasta sauce or chopped and used as a delicious and dressy relish garnish. We also like them straight out of the jar with a chunk of crusty bread and a sprinkle of salt.