Chicago-Style Deep-Dish Pizza

INGREDIENTS

3 1/4 cups

all-purpose flour

1/2 cup

yellow cornmeal

1 1/2 tsp

table salt

2 tsp

sugar

2 1/4 tsp

instant or rapid-rise yeast

1 1/4 cups

water (10 oz.), room temperature

3 tbsp

unsalted butter , melted, plus 4 tablespoons, softened

1 tsp

plus 4 tablespoons olive oil

2 tbsp

unsalted butter

1/4 cup

grated onion , from 1 medium onion (see note below)

1/4 tsp

dried oregano

Table salt

garlic cloves, minced or pressed through garlic press (about 2 teaspoons)

1 28 ounce can

crushed tomatoes

1/4 tsp

sugar

2 tbsp

coarsely chopped fresh basil leaves

1 tbsp

extra-virgin olive oil

Ground black pepper

1 lb

whole-milk or part-skim mozzarella cheese, shredded (about 4 cups) (see note below)

1/2 oz

grated Parmesan cheese (about ¼ cup)

Hot or mild Italian sausage, casings removed (optional)