Cook pasta according to package directions.
Sauté the onion and vegetables in 2 Tbsp. of the butter and the herbs, and set aside. Then sauté the breadcrumbs in the remaining 2 Tbsp. of butter in the same pan.
In large bowl, combine soup, mayonnaise, mustard, Worcestershire sauce, tuna, peas, and the sautéed vegetables. Then combine with the cooked and drained pasta. Add salt and pepper to taste.
Transfer mixture into a casserole dish. Top with shredded cheese, then breadcrumbs.
Bake at 400 degrees Fahrenheit for 30 minutes, until the breadcrumbs brown and the casserole is heated through.