Stir sour cream with salt and pepper until smooth. Roll out the tarte flambée dough directly on the baking paper on a baking tray. Cut out an oval shape and spread with sour cream, leaving about 1/2 cm of edge all around.
Wash the pears, quarter them, cut out the core. Cut quarters into slices and spread on the tarte flambée with the gorgonzola. In the preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: see
manufacturer) Bake for 12-15 minutes.
Wash lamb's lettuce and shake dry. Remove the tarte flambée from the oven, spread lamb's lettuce on top and sprinkle with coarse pepper.