Or serve with Quinoa with Toasted Pine Nuts and Celery and Parsley Salad.
1. Heat a large skillet over high heat. Add oil; swirl to coat. Sprinkle steaks evenly with 1/4 teaspoon salt and 1/4 teaspoon pepper. Add steaks to pan; cook 4 minutes on each side or until desired degree of doneness. Remove steaks from pan. Let stand 5 minutes.
2. Reduce heat to medium-high. Add shallots and thyme to pan; sauté 1 minute or until lightly browned. Add wine; cook 2 1/2 minutes or until liquid almost evaporates. Add stock; cook 3 minutes or until liquid is reduced by half and mixture is slightly thickened. Remove pan from heat. Add remaining 1/8 teaspoon salt, 1/8 teaspoon pepper, butter, and mustard; stir with a whisk.
3. Cut steak across the grain into thin slices; serve with sauce. Sprinkle with chopped parsley.