2 tb Olive oil
2 Onions, finely chopped
2 Garlic cloves, crushed
1 cn Tomatoes in juice (8 oz)
1 cn Green chilies (3.5 oz)
1 tb Chili relish
1/2 ts Cumin seeds
1 lb Lean ground beef
Salt to taste Fresh ground pepper to taste 2 tb Corn oil
4 sl Gruyere cheese
Shredded lettuce 4 Buns, split, warmed
Onion slices
Heat olive oil in a saucepan. Add chopped onion and garlic and fry gently 5 minutes. Process tomatoes in a blender or food processor to a puree. Drain and chop chilies. Add tomatoes, chilies, chili relish and cumin to onion mixture. Stir well, then cover and simmer 10 minutes, stirring occasionally.
Meanwhile, put ground beef into a bowl. Add remaining onion, salt and pepper; mix well. Divide into 4 equal balls and shape each in 1 4-1/2" round burger. Heat corn oil in a large skillet. Add burgers and 5-6 minutes on each side. Top each with a slice of cheese. Arrange lettuce on 4 bun halves. Place burger on lettuce and top with chili sauce, onion and remaining bun halves. Serve hot in napkins.