Preheat your oven to 375F. Grease a 9x13 oven save baking dish. I used Pam olive oil spray, you can also use vegetable or olive oil.
Mix in a large bowl the following ingredients: tuna, cream of mushroom soup, drained peas, and cheese if using. Place the mixture in your 9"x 13" baking dish.
Cook the egg noodles or your pasta of choice, according to package directions. Drain and add to the mixture in the baking dish. Stir well, and add some salt, pepper, and garlic powder to taste.
Place in your 375F oven, and bake for 25 minutes if using crumb topping. If not using crumb topping, check if nicely browned and heated through after 25 minutes and remove, or cook for 30 minutes total.
IF ADDING THE CRUMB TOPPING, then mix together the panko, olive oil, and your choice of seasoning. Remove the dish from the oven after the 25 minutes, sprinkle the crumb topping evenly on top, then bake for an additional 5 minutes.
Add green onions for garnish (optional) and serve!