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+ servings
A plate full of cooked noodles, peas, and tuna to make a tuna noodle casserole.
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5 from 1 vote

Tuna Noodle Casserole

Easy Tuna Noodle Casserole from scratch that you can make in your pressure cooker.
Prep Time5 mins
Cook Time10 mins
Course: Dinner
Cuisine: American
Keyword: casserole, instant pot, tuna
Servings: 4
Calories: 750kcal


  • Instant Pot


  • 1 lb pasta of choice
  • 3 Tablespoons olive oil can use butter
  • 1 onion diced
  • 2 stalks celery diced
  • 2 garlic cloves sliced
  • 4 Tablespoons all-purpose flour
  • 1 cup coconut milk
  • 2 cups broth
  • Salt and pepper to taste
  • 1 teaspoon dried dill
  • 1 cup peas
  • 1-5 oz can tuna
  • 1/2 cup shredded cheese <-- can use cashew cheese or regular mozzarella


  • Turn your Instant Pot to Saute and add 1 Tablespoon of the olive oil.
  • Add the onion and celery to the hot oil and cook until onion is translucent, about 3 minutes. Add the garlic and continue cooking for 1 minute until fragrant.
  • Remove vegetables to a small dish.
  • Place 2 Tablespoons of oil in the same saucepan and melt. Stir in the all-purpose flour until you form a brown roux.
  • Turn off the Instant Pot
  • Whisk the coconut milk into the roux, and then add the broth and spices.
  • Add back in the vegetables, then layer in the pasta, tuna and cheese. (Do not mix.)
  • Place the lid on the Instant Pot and set to manual for 5 minutes.
  • Quick release.
  • Stir in the peas and let set for 2 minutes before serving.



Calories: 750kcal | Carbohydrates: 102g | Protein: 24g | Fat: 28g | Saturated Fat: 14g | Cholesterol: 14mg | Sodium: 595mg | Potassium: 529mg | Fiber: 6g | Sugar: 7g | Vitamin A: 637IU | Vitamin C: 18mg | Calcium: 127mg | Iron: 5mg