Crockpot Steak Soup

Grrrrrgh!
Course : Crockpot
From: HungryMonster.com
Serves: 1
 

Ingredients:

3 cups water
1 package frozen mixed vegetables -- (10 oz.)
3 stalks celery -- chopped
2 small onions -- chopped
2 medium carrots -- sliced
1 pound ground beef or cubed chuck roast -- browned and
1 pound tomatoes
2 tablespoons beef base -- granules or paste
1/2 teaspoon pepper
1 stick butter
1/2 cup flour
 

Preparation:

Put all ingredients in crockpot EXCEPT for butter and flour. Cover and cook on Low for 8 to 10 hours. One hour before serving, turn on High. Make a roux of 1 stick butter and 1/2 c. flour (melt butter in small saucepan, on med-low heat, and stir in flour); stir until smooth. Pour into crockpot and stir into soup. Cook soup on High until thickened.