Potato and Bean Salad with Lemon Yoghurt Dressing

Ingredients

• 2 small potatoes, unpeeled, cut into wedges
• 150 gram green beans, trimmed, cut into 3cm lengths
• 230 gram baby rocket leaves
• 1/2 small red onion, sliced thinly
• Lemon yoghurt dressing
• 1/3 cup low-fat yoghurt
• 1 teaspoon finely grated lemon zest
• 1 tablespoon fresh lemon juice
• 1 tablespoon finely chopped fresh flat-leaf parsley