Top Sirloin Skirt Steak & White Bean Soup

Ingredients

• fat-free cooking spray
• 1 medium (4 oz.) red onion, sliced
• 2 Tbsp. balsamic vinegar or infused balsamic vinegar
• 1 can (15.5 oz.) cannellini beans (white kidney beans)
• 2 cloves (2 tsp.) garlic, minced
• 1 tsp. dried rosemary (or 1 Tbsp. fresh), chopped
• 1/2 tsp. black pepper
• 2 Tbsp. lemon or lime juice
• 12 oz. of top sirloin (beef loin) lean steak, thin