Stir yeast and sugar into warm water; let stand until foamy, about 10 min.
Add flour and salt to food processor and with processor running, pour yeast mixture through feed tube and process 45 seconds or until dough pulls away from sides of bowl. Add oil through feed tube and run an additional minute.
Note: If dough sticks to sides of bowl, add more flour 1 Tbsp. at a time and process 10 seconds after each addition.
Roll dough out onto a floured surface to make one (14 inch) or two (9 inch) circles. Rotate and turn dough often and use enough flour so dough does not stick.
Oil baking pans and sprinkle with cornmeal. Loosely fold pizza dough in half and then half again to transfer to pizza pan placing the point of the dough in the center of the pan. Unfold dough and press from the center outward folding edges under to create a rim.