Recipe comes from Rachael Ray's "Just In Time" Cookbook...she says...."Two basics come together and become one classic sammie. Why didn't I think of this sooner?" Extra Tidbit from Rachel... "You'll need about 1/2 a small onion to get 3 to 4 tablespoons grated, but start with a whole onion to spare your fingertips; save the rest for another use. To save time and cleanup, grate directly into the bowl."