Melt shortening in large fry ... golden brown. Add hamburger. Cook until light brown. ... 10 minutes. Spread buns with mustard, fill with meat ... through. Yield 6-8 servings.
Combine cheese, eggs, catsup, onion, ... half of each bun. Broil bottom halves in ... top halves of buns under broiler until lightly toasted. Serve immediately.