Homemade Chicago Style Deep Dish Pizza (Buttery Crust)

Ingredients

• 3 cups (390 g) all-purpose flour
• 1/3 cup (45 g) yellow cornmeal
• 2 1/4 teaspoons instant yeast
• 1 1/2 teaspoons sugar
• 1 1/2 teaspoons kosher salt
• 1 cup (240 ml) warm water
• 1/3 cup (80 ml) corn oil or vegetable oil
• 2 tablespoons unsalted butter, softened, for the pan
• 1 tablespoon olive oil
• 2 garlic cloves, minced
• 1 can (28 oz or 794 g) whole peeled tomatoes, drained and crushed
• 1 teaspoon dried oregano
• 1/2 teaspoon kosher salt
• 1/4 teaspoon sugar
• 1/4 teaspoon crushed red pepper flakes, optional
• 12 oz (340 g) sliced low-moisture whole milk mozzarella
• 8 oz (225 g) raw Italian sausage, casing removed
• 1/2 cup (50 g) finely grated Parmesan cheese
• 2 tablespoons chopped fresh basil, optional