Preheat oven to 375 and grease a 9x13" pan
Boil water for the egg noodles. Cook for 6 minutes, or half the time on the package directions. Drain and rinse in cold water.
16 ounces egg noodles
Melt butter in a skillet, then add onion, celery and garlic. Cook until they start to become tender but are still slightly crisp. Add salt to taste.
1 tablespoon butter, 1 small onion, 2-3 celery stalks, 2 cloves garlic, 1 teaspoon salt
Combine tuna, soup, milk, cheddar cheese, peas, cooked vegetables and noodles in a large bowl.
10 ounces tuna, 10 1/2 ounces Cream Of Mushroom Soup, 3/4 cup whole milk, 1 cup cheddar cheese, 1 cup frozen peas
Pour into the prepared pan in an even layer.
In a separate bowl, combine the cornflakes, cheddar cheese and parsley. Add melted butter and stir until all ingredients are coated.
1 cup crushed cornflakes, 1/2 cup cheddar cheese, 1 tablespoon parsley, 1-2 tablespoon melted butter
Top the casserole with cornflake topping and bake for 20 minutes or until golden brown.
Garnish with fresh cheddar and parsley and serve hot. Enjoy!