Slimming World's tuna penne niçoise recipe

Name: Slimming World's tuna penne niçoise recipe
Prep time: 15 min
Cook time: 10 min
Total time: 25 min
Cuisine: European, Italian, Mediterranean
Ingredients: 200g dried penne; 200g green beans, trimmed and halved; 2 x 185g cans tuna chunks in spring water, drained; 2 little gem lettuce, leaves separated and roughly torn into bite-sized pieces; 1 yellow pepper, deseeded and cut into small pieces; 200g midi or large cherry tomatoes, halved or quartered; 8 pitted black olives; 1 red onion, peeled and thinly sliced; 4 eggs, boiled to your liking, halved or quartered (optional)