Preheat oven (electric cooker: 220 °C/circulating air: 200 °C/gas: see manufacturer). Peel and halve the onion and cut into thin strips. Cut dates crosswise into slices. Wash and halve the tomatoes.
Unroll the dough and place it on a baking tray together with the baking paper. Spread evenly with crème fraîche, leaving a small rim all around (approx. 1 cm). Season with salt and pepper. Spread onion, dates, tomatoes and diced ham on top.
Cut the cheese into thinner thalers and spread on the tarte flambée. Drizzle with honey.
Bake the tarte flambée in a hot oven for about 15-18 minutes. In the meantime, wash the rocket, shake dry and remove the hard ends of the stems. After baking, top the tarte flambée with rocket and cut into pieces as you like.