For the tarte flambée with asparagus and bacon, first knead all the ingredients into a dough and let it rest for a good 1/2 hour. Meanwhile, for the topping, peel the asparagus and cook in salted water (with a sprinkle of sugar) until al dente. Quench.
Mix the sour cream with the pesto, add salt and pepper. Roll out the dough thinly on a piece of baking paper, pull it out onto a baking sheet and spread with the sour cream mixture.
Leave the edge about 1 cm free. Then carefully place the asparagus on top and sprinkle the tarte flambée with bacon. Bake in the preheated oven at 225 °C for about 15 to 20 minutes.
Arrange the tarte flambée with asparagus and bacon and serve.