Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 1/2  pounds        ground beef
     1/2  cup           chopped onion
   1      can           tomato sauce -- (8 oz.)
   1      package       taco seasoning mix -- (1 1/4 oz.)
   6                    hamburger buns
  12      slices        tomato
   1      cup           shredded Cheddar cheese -- (4 oz.)
     3/4  cup           shredded lettuce
     1/4  cup           chopped stuffed olives
   1      small         onion -- cut into rings and
                        -- separated
   1 1/2  tablespoons   chopped red and green chiles

Preparation:

Brown beef and onion in a large skillet, stirring to crumble; drain. Stir in tomato sauce and taco seasoning; simmer 5 minutes. Split and toast hamburger buns; spread with meat mixture. Place tomato slice on each sandwich, and sprinkle with cheese; bake at 400 F for 4 minutes or until cheese melts. Top with lettuce, olives, onion, and chiles.