Combine first 5 ingredients in a small bowl; set aside.
Sprinkle pepper and salt over both sides of steaks. Heat a medium nonstick skillet over medium-high heat. Coat pan with cooking spray. Add steaks; cook 2 minutes on each side. Reduce heat to medium; cook steaks 2 minutes or until desired degree of doneness. Transfer steaks to a platter; cover and keep warm.
Add bourbon mixture to pan; cook over medium-high heat until mixture has reduced to 1/4 cup (about 3 minutes). Serve sauce over beef; sprinkle with parsley.