1. In a large skillet, brown chicken in butter and oil for 10 minutes; drain. Add the broth, chilies, mustard, garlic and salt. Simmer, uncovered, for 10 minutes or until chicken juices run clear.
2. Stir in the cream; simmer until thickened. Sprinkle with cheese. Cover and cook until the cheese is melted. Serve over rice. Yield: 2 servings.