Fusilli Salad with Ham and Lima Beans

Ingredients

• 10 oz fusilli pasta
• 2 1/2 cups fresh or frozen and thawed shelled baby lima beans
• 1 1/2 cups cherry tomatoes (halved)
• 2/3 cup lean cooked ham (diced)
• 1/4 cup fresh chives (snipped)
• 1 tbsp extra virgin olive oil
• 2 oz watercress leaves (roughly chopped)
• 2 oz watercress leaves
• 1/3 cup walnut pieces
• 1 garlic clove (peeled)
• 1/4 cup extra virgin olive oil
• Juice of 1/2 lemon (zest grated)
• 1/4 cup low-fat plain yogurt
• Salt and freshly ground pepper