A “Toast Sandwich” from an 1865 recipe created for people with various digestive issues. It’s literally a buttered toast between two slices of non toasted bread.
A big effort sandwich would probably be a Carne Asada Torta with many elements and long marinade times. Personally, I would slow cook a large chunk the meat for this one to use with other dishes as well.
Trifle. Yesssss