Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 1/4  pounds        lean ground beef
   1                    egg -- beaten lightly
   1      small         yellow onion -- finely chopped
   1      teaspoon      worcestershire sauce -- (optional)
     1/2  teaspoon      salt
     1/2  teaspoon      black pepper
   4      ounces        cheese -- (monterey jack,
                        -- cheddar, hot
                        -- pepper, your
                        -- choice)

Preparation:

In large bowl, combine the beef, egg, onion and Worcestershire sauce, salt and pepper. Divide the meat into 8 equal portions and form each portion into a patty 3/8" thick and 4 inches in diameter. Divide the cheese into 4 equal portions and form each into a flat round cake about the size of a silver dollar. Place a cheese patty in the center of each of 4 meat patties. Top with a second meat patty and seal the edges. At this point the stuffed burgers can be stored. Arrange them in a single layer on a wax-paper-lined tray, cover with plastic wrap or foil. Refrigerate overnight. Freeze, individually wrapped and labeled in heavy duty aluminum foil or plastic wrap, for 1 month. Broil the burgers 3 inches from the heat, allowing 5 minutes on each side for rare, 6 minutes for medium and 7 min for well done. From the Freezer-To cook the frozen burgers, heat 1 tbsp. oil in skillet. Cook frozen burgers for 5 minutes on each side until brown. Reduce the heat to moderately low, cover and cook for 15-20 minutes, depending on your desired doneness, turning them once. VARIATIONS Fiesta Burgers add 1 clove garlic, minced 2 Tablespoons each red/green pepper, chopped Combine all ingredients and shape into 4 burgers. Proceed as in cheese-stuffed burgers. Avocado-Stuffed Burgers Add 1/3 cup fine dry bread crumbs 1 1/4 cup tomato juice 2 teaspoons chili powder 1(4-oz. can) green chilies 1 small avocado, peeled 4 oz. cheese Divide into 8 patties. In center of each patty place 1/4 slice of avocado, chilies and 1/4 of cheese. Place second burger on top and seal edges. Prepare for freezing, as above.