Turn out onto a liberally floured work-surface and knead gently until the mixture comes together to form a smooth ball (about 8-10 times). If the dough is still very sticky, knead in the extra 1/4 cup of flour.
Press dough into pan, pressing gently with your fingertips all over the dough. Add desired toppings and bake for about 30 minutes at 400F (until cheese is melted and dough is beginning to brown.