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A spoon filled with Tuna Noodle Casserole lifts some of the dish out of a white bowl.
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Tuna Noodle Casserole

Comfort food at it's finest, this casserole is one the whole family will love.
Prep Time30 minutes
Cook Time30 minutes
Total Time1 hour
Course: Main Course
Cuisine: American
Servings: 12 servings
Calories: 403kcal

Equipment

  • 1 Casserole dish
  • 1 Large mixing bowl
  • 1 Medium pot
  • 1 Whisk
  • 1 rubber spatula

Ingredients

Filling Ingredients

  • 8 oz. dry rotini pasta (cooked to package directions)
  • 20 oz. water-packed, canned tuna (4 cans - drained and flaked)
  • 1 lb. package frozen carrots and peas
  • 2 cups grated mild cheddar cheese

Creamy Sauce Ingredients

  • ¼ cup unsalted butter
  • ¼ cup oat flour
  • 1 tbsp. arrowroot powder (or cornstarch)
  • 2 cups milk
  • 1 cup chicken broth (or vegetable broth - no sugar or dextrose added)
  • 1 cup grated sharp cheddar
  • 12 oz. package sliced mushrooms
  • 1 tsp. Dijon mustard
  • 1 tbsp. garlic powder
  • 1 tbsp. onion powder
  • 1 tsp. dried thyme
  • salt and pepper to taste

Topping Ingredients

  • 1 cup breadcrumbs (whole-wheat Panko if store bought)
  • ¼ cup grated parmesan cheese
  • 2 tbsp. melted butter
  • fresh, chopped parsley (optional for garnish)

Instructions

Pasta

  • Cook the pasta in salted water according to the package direction. While that cooks, move on to the next steps.
    Adding salt to pasta water.

Sauce Instructions

  • Melt the butter in a medium pot.
    Melted butter in a pot.
  • Whisk in the flour and milk.
    Adding flour to melted butter in a pot.
  • Then, add the broth and the arrowroot powder. Whisk well for a few minutes until you see a thickening in the sauce.
    Adding chicken broth to butter in a pot.
  • Whisk in the spices, mustard, and cheese.
    Adding cheese to white sauce in a pot.
  • Finally, stir in the mushrooms and season with salt and pepper to your liking. Once that is done, set the sauce to the side.
    Stirring mushrooms into white sauce in a pot.

Preheat

  • Preheat the oven to 375 F.
    An oven display showing an oven temperature of 375 F.

Filling Instructions

  • Combine all the filling ingredients in a large mixing bowl and stir to combine. Then, spread the filling over the bottom of a casserole dish. Mine was 9x13, but you could get away with a dish that is a bit smaller if you don't have one that size.
    Spreading casserole filling over the bottom of a casserole dish.
  • Pour the sauce over the top and smooth it evenly over the entire surface with a spatula.
    Sauce with mushrooms spread evenly over casserole filling in a white casserole dish.
  • Add your topping(s) of choice and bake in the oven for 25-30 minutes or until everything is properly warmed through.
    Grated cheese sprinkled over the top of the casserole.
  • Let it cool for a bit before serving. The more you let it cool, the easier it will be to cut and serve.
    A serving of Tuna Noodle Casserole in a white bowl.

Notes

Please note that the nutrition data given here is a ballpark figure. Exact data is not possible.

Nutrition

Serving: 1serving | Calories: 403kcal | Carbohydrates: 28g | Protein: 28g | Fat: 21g | Saturated Fat: 11g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 5g | Trans Fat: 0.2g | Cholesterol: 70mg | Sodium: 626mg | Potassium: 409mg | Fiber: 5g | Sugar: 5g | Vitamin A: 4147IU | Vitamin C: 5mg | Calcium: 324mg | Iron: 4mg