Make the Dough: Mix warm water, yeast, and sugar. Let sit 5 min. Add flour, cornmeal, salt, and olive oil. Knead until smooth. Cover and rise for 1 hour.
Make the Sauce: Heat olive oil. Sauté garlic for 1 min. Add tomatoes, oregano, salt, and sugar. Simmer 15–20 min until thick.
Preheat Oven: Heat oven to 425°F (220°C).
Assemble the Pizza: Press dough into a greased 9-inch round cake pan or cast iron skillet. Let edges come up the sides.
Add mozzarella, then sausage, then sauce on top. Sprinkle Parmesan last.
Bake: Bake for 30–35 minutes until crust is golden and sauce is bubbly.
Cool & Serve: Let it rest 10 minutes before slicing. Enjoy!