American Chop Suey (Macaroni, Beef, and Cheese Casserole) | Dinners | Umami

Ingredients

• 1 pound elbow macaroni or other tubular pasta, such as cavatappi
• Kosher salt
• 2 (28-ounce) cans whole peeled tomatoes
• 2 tablespoons extra-virgin olive oil
• 2 tablespoons unsalted butter
• 1 large onion, finely diced (about 1 1/2 cups)
• 1 large green pepper, finely diced (about 1 cup)
• 4 cloves garlic, minced (about 4 teaspoons)
• 1 tablespoon dried oregano
• 1 teaspoon crushed red pepper flakes
• 1/4 cup finely minced fresh parsley leaves
• 1 pound 80/20 ground beef
• 2 tablespoons Worcestershire sauce, plus more for serving
• 1 cup homemade or store-bought low-sodium chicken stock
• Freshly ground black pepper
• 1 pound low moisture whole milk mozzarella cheese, cut into 1/2-inch cubes
• 3 ounces roughly grated Parmigiano-Reggiano