Heat the oven to 400°F.
Stir the soup, milk, pimientos, if desired, peas, tuna and noodles in a 1 ½-quart casserole, mixing well to ensure even heating.
Season the mixture with salt and pepper.
Stir the bread crumbs and butter in a small bowl.
Bake the tuna mixture for 20 minutes or until hot and bubbling slightly at the edges.
Stir the tuna mixture.
Sprinkle with the bread crumb mixture.
Bake for 5 minutes or until the bread crumb mixture is golden brown.
