French lentil and pea salad with honey and mustard dressing

Name: French lentil and pea salad with honey and mustard dressing
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Ingredients: 170g (3/4 cup) French green lentils; 200g sugar snap peas, trimmed; 140g (1 1/2 cups) frozen green peas or fresh green peas; 150g snow peas, trimmed, halved; 1/2 small red onion, finely chopped; 2 celery sticks, finely chopped, plus inner leaves; 1/2 cup fresh mint leaves, chopped; 1 tbsp extra virgin olive oil; 1 tbsp red wine vinegar; 2 tsp wholegrain mustard; 1 tsp honey; 50g marinated feta, drained, crumbled