Set a 6-Quart pot on the stove with water and boil, when the water is boiling, cook the pasta according to the package directions.
Make cream of mushroom soup in a large saucepan on the stove. If you have canned cream of mushroom soup, open and pour the contents into a large bowl and then set aside.
Open the cans of tuna and drain the liquid out, then empty the tuna into the cream of mushroom soup - either in the large saucepan or the large bowl, mix well with a spatula.
Open the bag of frozen peas and empty the contents into the tuna and cream of mushroom soup, then mix well with a spatula.
When the egg noodles are cooked, drain them in a sink colander.
Spray a 9 X 13-inch baking dish with non-stick spray and then place the egg noodles into the dish.
Scrape the tuna and mushroom soup mixture out of the bowl and onto the egg noodles in the baking dish and then with a spatula, mix the ingredients.
Finally, sprinkle the top of the Tuna Noodle Casserole with breadcrumbs and sprinkle with parmesan cheese if desired.
Bake at 350 degrees Fahrenheit for 30 minutes, then remove the casserole from the oven and let rest for 5 minutes before serving.