To prepare steaks, sprinkle beef evenly with 1/4 teaspoon salt and 1/4 teaspoon pepper. Rub 1 minced garlic clove over both sides of steaks. Melt butter in a large nonstick skillet over medium-high heat. Add steaks; cook 3 minutes on each side until browned or until desired degree of doneness. Remove steaks from pan; keep warm.
To prepare mushrooms, add shallots and mushrooms to pan; sauté 4 minutes or until lightly browned. Add 2 garlic cloves; sauté 30 seconds. Add wine, Worcestershire, 1/4 teaspoon pepper, and 1/8 teaspoon salt; cook 3 minutes or until liquid is nearly evaporated. Remove pan from heat, and stir in parsley. Serve mushroom mixture with steak.