American Chop Suey (Macaroni, Beef, and Cheese Casserole)

Ingredients

• pound elbow macaroni or other tubular pasta, such as cavatappi
• Kosher salt
• cans whole peeled tomatoes
• tablespoons extra-virgin olive oil
• tablespoons unsalted butter
• large onion, finely diced
• large green pepper, finely diced
• garlic, minced
• tablespoon dried oregano
• teaspoon crushed red pepper flakes
• finely minced fresh parsley leaves
• pound 80/20 ground beef
• tablespoons Worcestershire sauce, plus more for serving
• homemade or store-bought low-sodium chicken stock
• Freshly ground black pepper
• pound low moisture whole milk mozzarella cheese, cut into 1/2-inch cubes
• ounces roughly grated Parmigiano-Reggiano