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Tuna casserole with two servings

Tuna Noodle Casserole

Tuna Noodle Casserole from scratch is as easy as opening that can of soup. See my step-by-step easy instructions for classic comfort food. 
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Course: Casserole, Comfort Food, Main Dish
Cuisine: American
Keyword: Casserole, comfort food, homemade, retro recipe
Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes
Servings: 8 servings
Author: Laura Franco



  • 12- ounce package of Egg Noodles cooked 1-2 minutes less than the recommended least cooking time on the package
  • 11- ounce packet of white tuna packed in water
  • 4- ounces crimini button mushrooms - diced small
  • 2 celery stalks - dice small
  • 1/2 onion - diced small
  • 1 cup frozen peas
  • 1/4 cup 4 TBS butter
  • 1/4 cup flour
  • 2 cups milk or half-n-half
  • 4- ounces shredded cheddar cheese.

Crunchy Tuna Noodle Casserole Topping

  • 2.5- ounce bag of potato chips - crushed
  • 4- ounces shredded cheddar cheese
  • 1/3 cup Panko unflavored bread crumbs
  • 1/4 cup finely grated parmesan cheese
  • 1 TBS melted butter



  • Preheat oven to 375°
  • Melt butter in a stove-top skillet on meduim high.
  • Add mushrooms, onions, and celery and cook for 3-4 minutes
  • Make a small well in the middle of the pan and add the flour.
  • Whisk until the flour is incorporated and you have a paste-like texture.
  • Add the milk or half-n-half 1/2 cup at a time whisking while you add it. (If the sauce is too think, add more than 2 cups of milk - but add it 1/4 cup at a time at that point.)
  • When the mixture has a nice gravy-like texture, stir in the peas.
  • Add the cheddar cheese.
  • Stir in the tuna.
  • Stir in the cooked noodles
  • Sprinkle the topping liberally over the top and bake. (Topping instructions below.)
  • Bake uncovered for 25-35 minutes.
  • Let set for 10 minutes after baking.

Crunchy Tuna Noodle Casserole Topping

  • Mix all dry ingredients in a small bowl.
  • Add butter and mix thoroughly.


This casserole is great for leftovers. Simply spoon it into a microwave dish, cover it with a damp paper towel and microwave for 1 minute.