Niçoise Salad

Name: Niçoise Salad
Prep time: 30 min
Total time: 30 min
Cuisine: Mediterranean, Greek, European
Ingredients: Spinach bagged 80g; Cherry tomatoes 250g; 1 sweet potato or jarred new potatoes; 20 kalamata olives; 200g green beans; 1 can tuna; 3 tablespoons olive oil; 1 teaspoon Dijon mustard; 1 tablespoon dried parsely; 2 teaspoons red wine vinegar; Salat and pepper to taste; Salt to taste