Avocado Pine Nut Salad

Ingredients (12)

• DRESSING:
• 4 tablespoons white wine vinegar
• 3 tablespoons olive oil
• 1½ tablespoons Dijon mustard
• salt and pepper,
• SALAD:
• 1 head green leaf lettuce,
• 1 head red leaf lettuce,
• 2 medium vine-ripened tomatoes,
• 1 large avocado,
• ⅓ cup pine nuts,
• 1/4 cup shredded mozzarella cheese