Wash and clean the beans and halve them according to size. Cook in boiling salted water for 10-12 minutes. Pour the beans into a sieve and rinse immediately in ice water. In the meantime, mix yoghurt and vinegar for the dressing and season to taste with salt, pepper and honey.
Crumble the cheese and stir into the dressing. Peel onion and cut into rings. Clean and wash the bell peppers and cut them into rings. Clean and wash the frisée, spin dry and pluck into bite-sized pieces.
Arrange salad in a bowl and drizzle with sauce.