Preheat the oven to 475°F. Use a 12" round deep dish seasoned skillet.
Grind 3/4 cup cornmeal finely. Sift into a mixer bowl.
Combine cornmeal, warm water, yeast, salt, sugar, olive oil, and melted butter. Mix for 10 minutes.
Add 1 cup flour, then gradually add remaining until kneadable.
Knead dough on a floured surface for 3-5 minutes.
Oil mixer bowl. Place dough in, cover, and let rise (1/2 - 1 1/2 hours).
Punch down dough. Roll into a 1/4-inch thick circle.
Oil skillet with canola oil. Place dough, and form crust.
Cover dough, let rise until oven preheats to 475°F.
Brush the crust with melted butter.
Layer cheese (1/2 - 3/4 inches), then meat, then sauce.
Sprinkle parmesan cheese on top.
Bake at 475°F for 15 minutes.
Lower to 400°F, and bake for 10-25 minutes until golden brown.
Cool for 5 minutes, then serve. Enjoy your pizza!