Prepare Dough: In a bowl, combine warm water, sugar, and active dry yeast; let sit for 5 minutes until foamy. In a large mixing bowl, stir together flour, cornmeal, salt, butter, and olive oil. Gradually mix in yeast mixture, knead for 5 minutes, then rise for 1.5 hours.

Prepare Filling: Heat butter in a skillet, add sausage, and cook until browned (7-10 minutes). In the same skillet, sauté onions, bell pepper, and garlic until soft (about 5 minutes). Combine with sausage.

Make Sauce: Heat olive oil in a saucepan, add crushed tomatoes, oregano, basil, salt, pepper, and sugar. Simmer for 15 minutes, stirring occasionally until thickened.

Assemble Pizza: Preheat oven to 425°F. Roll out dough and press into pizza pan. Layer mozzarella cheese on dough, then sausage and vegetable mixture, and pour prepared sauce over top.

Bake: Place pizza in oven and bake for 25-30 minutes until crust is golden and cheese is bubbly. Cool for 10 minutes before slicing.