Instant Pot Tuna Noodle Casserole

Ingredients:

  • 8 oz gluten-free pasta (like rotini or shells)

  • 1 (12 oz) can of tuna in water, drained

  • cups unsweetened almond milk (or oat milk for creamier texture)

  • cups gluten-free vegetable or chicken broth

  • 1 cup frozen peas

  • 1 cup mushrooms, sliced (optional)

  • ½ cup onion, diced

  • 2 cloves garlic, minced

  • 2 tbsp olive oil or dairy-free butter (like Earth Balance)

  • 2 tbsp gluten-free all-purpose flour or cornstarch

  • ½ tsp salt, more to taste

  • ¼ tsp black pepper

  • ½ tsp dried thyme

  • 1 tbsp nutritional yeast (optional, for cheesy flavor)

  • Gluten-free breadcrumbs or crushed gluten-free crackers (optional for topping)

Instructions:

  1. Sauté the aromatics:

    • Turn the Instant Pot to Sauté mode.

    • Add olive oil, onions, mushrooms, and garlic.

    • Cook for 3–4 minutes until softened.

  2. Make a quick roux:

    • Stir in the gluten-free flour and cook for 1 minute.

    • Slowly add almond milk and broth, stirring to avoid lumps.

  3. Add remaining ingredients:

    • Add pasta, salt, pepper, thyme, nutritional yeast, and frozen peas.

    • Do not stir too much—just press pasta down so it's submerged.

  4. Pressure cook:

    • Seal the lid and set to Manual/Pressure Cook for 3 minutes.

    • Allow a quick release once done.

  5. Add tuna & thicken:

    • Stir in the tuna.

    • If needed, turn on Sauté and cook for 2–3 more minutes to thicken.

  6. Serve or broil (optional):

    • For a crispy topping, transfer to a broiler-safe dish, sprinkle with gluten-free breadcrumbs or crackers, and broil for 3 minutes.

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