Could someone help me fine the points to this recipe and use the lean hamburger in the recipe instead of regular hamburger? Thanks for your help.

Deluxe Salisbury Steak
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Ingredients:

1 can (10 3/4 oz.) of condensed cream of mushroom soup, undiluted
1 tablespoon of prepared mustard
2 teaspoons of Worcestershire sauce
1 teaspoon of prepared horseradish
1 egg
1/4 cup of dry bread crumbs
1/4 cup of finely chopped onion
1/2 teaspoon of salt
1 1/2 pounds of ground beef
1 to 2 tablespoons of oil
1/2 cup of water
2 tablespoons of chopped fresh parsley
Black pepper to taste

In a bowl, combine the soup, mustard, Worcestershire sauce and
horseradish and blend well. Set aside. In another bowl, lightly
beat the egg. Add bread crumbs, onion, salt, pepper and 1/4 cup
of the soup mixture. Add beef and mix well. Shape into six patties.
In a large skillet, brown the patties in oil; drain. Combine
the remaining soup mixture with water; pour over patties. Cover
and cook over low heat for 10-15 minutes or until meat is done.
Remove patties to a serving platter; spoon sauce over meat.
Sprinkle with parsley.