Stir the soup, milk, pimientos, peas, tuna and noodles in a 1 1/2-quart casserole. Stir the bread crumbs and butter in a small bowl.
Bake the tuna mixture at 400 degrees F. for 20 minutes or until hot and bubbling. Stir the tuna mixture. Sprinkle with the bread crumb mixture.
Bake for 5 minutes or until the bread crumb mixture is golden brown.