"Active time: 35 min Start to finish: 35 min This recipe makes good use of the tail-end portion of a tenderloin...."
INGREDIENTS
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3 1/2 tablespoons unsalted butter
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1 tablespoon all-purpose flour
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1 cup beef broth
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1 (1-lb) piece beef tenderloin, trimmed, sliced 1/4 inch thick, then cut into 1-inch pieces
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2 tablespoons olive oil
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1/2 cup thinly sliced shallot
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3/4 lb cremini mushrooms, trimmed and halved (quartered if large)
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3 tablespoons sour cream at room temperature
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1 teaspoon Dijon mustard
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2 tablespoons chopped fresh dill
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1/2 teaspoon salt
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1/4 teaspoon black pepper
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Accompaniment: buttered wide egg noodles