Quick rainbow salad

Name: Quick rainbow salad
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Ingredients: 200 gram carrots, cut into pieces (2 cm); 200 g red peppers, cut into pieces (3 cm); 200 g broccoli, cut into florets, plus stems sliced (0,5 cm); 160 g apples, stems removed, cut into quarters; 30 g sunflower seeds, unsalted; 30 g olive oil; 15 g lemon juice; 1 tsp honey; 1 ½ tsp mustard; 1 tsp fine salt; ¼ tsp freshly ground black pepper