Vietnamese Beef Ribbons

Ingredients

• 1 pound lean boneless beef sirloin steak
• 1 tablespoon chopped fresh lemon grass
• 1 teaspoon minced serrano pepper with seeds
• 2 tablespoons lime juice
• 2 tablespoons low-sodium soy sauce
• 1 clove garlic, minced
• 1 medium onion, thinly sliced and separated into rings
• 3 tablespoons sugar
• 3 tablespoons white wine vinegar
• 1/4 teaspoon pepper
• 4 cups shredded carrot
• 1/3 cup chopped fresh mint
• Vegetable cooking spray
• 1 tablespoon chopped unsalted dry-roasted peanuts