Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      pounds        beef round steak -- 1/2" thick
     1/2  cup           all-purpose flour
   2      teaspoons     salt
     1/8  teaspoon      pepper
     1/2  teaspoon      dry mustard
   2      medium        onions thinly sliced and separated into -- rings
     1/2  pound         fresh mushrooms -- sliced
   1      10.5 oz can   condensed beef broth
     1/4  cup           dry white wine
   1 1/2  cups          sour cream
     1/4  cup           all-purpose flour
                        hot buttered noodles or fluffy rice
   3      tablespoons   fresh minced parsley

Preparation:

Trim all excess fat from steak and cut meat into 3 inch strips about 1/2 inch wide. Combine 1/2 cup flour, the salt, pepper and dry mustard; toss with steak strips to coat thoroughly. Place coated steak strips in crock pot; stir in onion rings and mushrooms. Cook on low for 6 to 8 hours. Before serving combine sour cream with 1/4 cup flour; stir into crockpot. Serve Stroganoff over hot buttered noodles garnished with minced parsley