Prepare the tarte flambée dough with 2 tbsp. oil and let it rise.
Heat 1 tablespoon of oil in a frying pan. Fry the minced meat crumbly, season with salt and pepper. Add barbecue sauce and mix well. Remove from the heat and let it cool down.
Clean the jalapeños, cut them lengthwise, remove the seeds, wash and cut them into fine rings. Roughly grate the cheddar. Mix with the sour cream.
Preheat oven (electric cooker: 220 °C/circulating air: 200 °C/gas: see manufacturer). Line baking tray with baking paper. Halve the dough, roll out half round (approx. 28 cm Ø) and very thin on a floured work surface. Place on the baking tray. Spread half of the dough with cheddar cream, leaving a small rim. Cover each with half jalapeños and minced meat. Bake in a hot oven for 12-15 minutes. Remove from the oven and prepare and bake the 2nd tarte flambée in the same way.