Beef Tenderloin with Mushroom Gravy

Ingredients

• 4 (4-ounce) beef tenderloin steaks, trimmed
• 1/2 tsp black pepper
• 1/4 tsp salt
• 1 cup presliced mushrooms
• 1/2 cup finely chopped onion
• 1 tsp bottled minced garlic
• 1/2 cup low-salt beef broth
• 1/3 cup fat-free sour cream
• 2 tbsp minced fresh parsley