While noodles are boiling, cook shallots and butter in 3-quart saucepan about 3 minutes, stirring occasionally, until shallots are soft. Stir in flour to make a roux; cook 60 seconds. Gradually stir in chicken broth, stirring constantly, until mixture is smooth and all stock is mixed in. Heat to simmering, stirring constantly, until thickened. Remove from heat; stir in whipping cream. Season with salt and pepper to taste.