With the motor running, gradually pour in enough of the hot liquid until the mixture forms a sticky ball. The dough should be quite soft. If it seems dry, add 1 to 2 tablespoons warm water; if too sticky, add 1 to 2 tablespoons flour.
Process until the dough forms a ball, then process for 1 minute to knead.
Transfer the dough to a lightly floured surface.
Spray a sheet of plastic wrap with cooking spray and place it, sprayed-side down, over the dough.
Let the dough rest for 10 to 20 minutes before rolling.