12 ounces uncooked ziti pasta 1 tablespoon olive oil 1 pound andouille sausage, cut into 1/2-inch slices 1/2 small red bell pepper, cut into thin strips 1/2 small yellow or orange bell pepper, cut into thin strips 1/2 cup chopped sweet onion 2 teaspoons minced garlic 2 (14.5-oz.) cans fire-roasted diced tomatoes 1 (8-oz.) can tomato sauce 2 teaspoons granulated sugar 1 teaspoon kosher salt 1/2 teaspoon black pepper 3 ounces Parmesan cheese, shredded (about 3/4 cup) 4 ounces mozzarella cheese, shredded (about 1 cup) Basil leaves, for topping