Salade niçoise with maatjes

For ➍ 
4 maatjes (marinated herring fillets)
4 eggs
200 g extra fine princess green beans
250 g cherry tomatoes (or sun-dried tomatoes)
1 yellow pepper
1 red pepper
1 bunch scallions
600 g new potatoes
100 g black olives
1 tbs fine sugar*
4 tbp olive oil
4 sprigs fresh thyme
pistou with 4 sprigs of basil**
salt and pepper
dressing:
250 g natural yogurt
2 tbs old-fashioned mustard
5 tbs olive oil
⅓ bunch flat parsley**
pepper & salt
4 sprigs oregano

Preheat the oven to 200°C. Clean the spring onions and cut the baby potatoes into 2. Peel the peppers and cut them into strips.
Cover the oven plate with baking paper and arrange the potatoes on top, with the cutting edge down. Prick holes in the cherry tomatoes with a knife and add them, together with the spring onions, the olives and the bell peppers. Drizzle with olive oil, season with salt and pepper, dust with sugar and sprinkle with thyme and oregano. Bake for 25 m and allow to cool.
Remove the tops of the beans and boil them for 5 m in salted boiling water. Scare them in ice cold water.
Dip the eggs in boiling water. Depending on their size, drain them after 7 to 8 m of cooking time and let them scare in cold water.
Make the dressing: mix the finely chopped parsley** with the other ingredients.

Peel the eggs and cut into 2. Arrange the grilled vegetables and beans on the plates or in a large bowl. Add the eggs, the maatjes and the basil.
Sprinkle with a little dressing and serve.

*Optional.
**Or mix the parsley and the yogurt with the hand blender, instead of chopping finely.