INGREDIENTS
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2 pounds beef chuck roast
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1/2 teaspoon salt
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1/2 teaspoon ground black pepper
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4 ounces butter
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4 green onions, sliced (white parts only)
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4 tablespoons all-purpose flour
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1 (10.5 ounce) can condensed beef broth
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1 teaspoon prepared mustard
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1 (6 ounce) can sliced mushrooms, drained
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1/3 cup sour cream
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1/3 cup white wine
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salt to taste
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ground black pepper to taste