Beef Stroganoff

Ingredients

• 1 1/2 lb. beef tenderloin or boneless top loin steak (about 1/2-inch thick)
• 2 Tbsp. margarine or butter
• 1 1/2 c. beef broth
• 2 Tbsp. ketchup
• 1 tsp. salt
• 1 small clove garlic, finely chopped or 1/8 tsp. instant minced garlic
• 8 oz. mushrooms, sliced
• 1 medium onion, chopped (about 1/2 c.)
• 3 Tbsp. all-purpose flour
• 1 c. dairy sour cream