Sour Cream Meat Balls

1/4 cup butter
1 onion, chopped
2 pounds ground beef
2 eggs
2 teaspoons salt
1/2 teaspoon pepper
1/4 teaspoon pepper
1/4 teaspoon marjoram
2 1/2 tablespoons all-purpose flour
5 1/2 tablespoons tomato paste
3/4 cup beef stock
4 teaspoons Worcestershire sauce
2 teaspoons vinegar
1/2 pound mushrooms sliced
1 cup sour cream

Saut? onion in half butter until golden brown. Put onions in crockpot. Mix together beef, eggs, salt and pepper. Form into small balls and brown. Sprinkle on tarragon, marjoram and flour Shake skillet to turn meat balls and coat them with flour. Put meat balls into crockpot.

Mix together tomato paste, beef stock, Worcestershire sauce and vinegar in skillet without cleaning the skillet from browning the meatballs. Scrape bottom of pan and cook for 2 minutes. Pour over meat balls Cover crockpot. Cook on LOW about 1 1/2 hours.

Melt remaining butter. Saut? mushrooms for 5 minutes. Add mushrooms and sour cream and heat throughout.

Delicious served over cooked egg noodles.