Slinger
Hash browns, eggs, hamburger patties, chili, cheese, and onions; sometimes on toast or with bread.
The Open-Face & Hot-Plate Sandwich
Ponyshoe
The ponyshoe is the Springfield horseshoe at half scale: one slice of toast under meat, fries, and a flood of Welsh-rarebit cheese sauce, eaten flat with a knife and fork.
Hot Open-Face Turkey Sandwich
The diner hot turkey sandwich: roast turkey on a single slice of soft white bread, the whole plate flooded with hot gravy, eaten with a fork. The blue-plate special, built around bread meant to soak.
Hot Open-Face Roast Beef
A single slice of soft white bread under thin roast beef and brown gravy, a scoop of mashed potato beside it under the same gravy, eaten with a fork off a wide oval diner plate.
Hot Brown
Open-faced turkey sandwich with bacon, tomatoes, and Mornay sauce, broiled; Brown Hotel original.
Horseshoe
Open-faced sandwich with meat on toast, covered with French fries and cheese sauce.
Gerber Sandwich
Open-faced garlic bread topped with ham and Provel cheese, broiled; invented at Ruma's Deli.
Garbage Plate
A Rochester Garbage Plate is a split bed of home fries and macaroni salad under two cheeseburgers or hots, flooded with spiced meat hot sauce, with white bread to mop. Trademarked 1992.
Disco Fries Sandwich
French fries with gravy and melted cheese on bread; diner creation.
Avocado Toast
Not exactly a sandwich, but California's health-food icon; often open-faced.