Coat both sides of steaks with pepper. Spray medium nonstick skillet with nonstick cooking spray. Heat over medium-high heat until hot. Add steaks; cook 6 to 12 minutes or until of desired doneness, turning once.
Add garlic; cook and stir 1 minute or until golden brown. Add wine and broth; boil 1 minute. Remove steaks from skillet; cover to keep warm. With wire whisk, stir in mustard until sauce is well blended. Serve sauce over steaks.