Cold Broccoli Salad with Creamy Mustard Dressing

Ingredients

• 1 large head broccoli
• 1/2 cup plain yogurt
• 1/2 cup mayonnaise
• 2 tablespoons chopped fresh parsley leaves
• 1 tablespoon chopped fresh basil leaves or 1 teaspoon dried
• 1 1/2 tablespoons Dijon mustard
• 1 teaspoon dry mustard
• 1 tablespoon tarragon vinegar or white wine vinegar
• 1 rib celery, finely chopped
• 1 cup canned chickpeas, drained rinsed
• 1/2 cup finely chopped red onion
• 1/2 cup freshly grated Parmesan cheese
• Freshly ground black pepper to taste
• 1 cup croutons (optional)