The recipe is given for 2 pies in the form of 20 cm. So if you are going to make 1 pie, then take more of the form.
I always cook the dough in the bread maker To do this, load all the ingredients and prepare it in the "dough" mode, it should increase in volume by 2 times and be moderately dense. The amount of flour you need to look at in the process, you may need to add a little when kneading.
I divided the finished dough into 2 parts (2 pies)