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How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe

Published: Mar 4, 2026 by Lilya · This post may contain affiliate links · Leave a Comment

Jump to Recipe· 3.9 from 9 reviews

If you’ve ever wondered how to get perfectly flaky, tender fish on a busy weeknight without thawing ahead, I’m thrilled to share the secret with you: this How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe is an absolute game changer. It lets you take frozen cod fillets straight from the freezer to your plate in no time, delivering flavorful, moist fish every single time. Whether you’re a seasoned pro or new to Instant Pot cooking, this straightforward method will make seafood night something you actually look forward to.

Ingredients You'll Need

Four pieces of frozen white fish fillets with a light orange tint are placed neatly on a white plate. To the top right of the plate, there is a small clear bowl with white salt and black pepper. Next to it, a white bowl filled with a clear liquid sits on a white marbled surface. The whole setup looks simple and clean photo taken with an iphone --ar 4:5 --v 7

Simple, fresh ingredients are the stars here — just a few essentials that build flavor and keep the fish juicy and light. Each item plays a vital role, from seasoning to ensuring gentle cooking without drying out your fillets.

  • 1 to 1½ pounds cod fillet: Choose fillets about ½ inch thick for even cooking and easy portioning.
  • 1 cup water: The key to creating the steam necessary for pressure cooking the fish perfectly.
  • ½ teaspoon salt: Enhances the natural flavor of the cod without overpowering it.
  • ¼ teaspoon black pepper: Adds a subtle kick and warmth to balance the delicate fish.

How to Make How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe

Step 1: Prepare the Instant Pot

Start by pouring one cup of water into the Instant Pot. This water will create the steam essential for pressure cooking your frozen fish perfectly, making sure it doesn’t dry out.

Step 2: Place the Fish and Season

Position the trivet inside the pot and lay your frozen cod fillets directly on top. Sprinkle salt, pepper, and any other seasoning you prefer right onto the fish. This direct seasoning is what gives you that fresh, vibrant flavor.

Step 3: Seal and Cook

Close the lid and turn the valve to sealing. Select manual pressure cook on high and set the timer to just 2 minutes. Keep in mind the Instant Pot will take around 8-10 minutes to build pressure before the timer starts counting down — patience here means perfectly cooked fish.

Step 4: Quick Release and Check

Once cooking finishes, carefully perform a quick release to let out steam immediately. Open the lid and check the internal temperature of the fish — it should read at least 140°F. If it’s not quite there, seal it again and cook for an extra 30 seconds to finish off the job.

Step 5: Serve or Use in Recipes

Remove the trivet carefully and discard any leftover liquid. Your perfectly cooked cod is ready to be enjoyed straight away or used as a protein boost in your favorite dishes.

How to Serve How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe

The first image shows an open pressure cooker with four pale, uncooked fish fillets inside, arranged on a silver rack. The fillets have a slight sprinkle of pepper on top and the inner pot has a smooth metallic surface. The second image is a close-up of the pressure cooker closed with its lid on, featuring a black and silver design with a wooden handle on top and an orange warning label in the center. The third image shows the opened pressure cooker again, now with the fish fillets cooked to a light golden brown on top, resting on the silver rack inside the metallic pot. The whole scene sits on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Add a squeeze of fresh lemon juice or sprinkle chopped herbs like parsley, dill, or chives over the fish before serving. These touches brighten the plate and add a fresh contrast to the mild cod.

Side Dishes

Pair your Instant Pot cod with simple roasted vegetables, steamed rice, or a light mixed greens salad to keep the meal balanced and wholesome. These sides complement the fish’s delicate flavor without overwhelming it.

Creative Ways to Present

Turn this quick-cooked fish into a showstopper! Flake it over warm quinoa bowls, serve in soft tacos with avocado and salsa, or use it as a protein topping on a crisp salad. The versatility of this recipe means you can customize it for any mealtime mood.

Make Ahead and Storage

Storing Leftovers

Keep any leftover cooked fish in an airtight container in the refrigerator for up to 3 days. It stays tender and flavorful, making it easy to enjoy quick meals or snacks later in the week.

Freezing

If you want to prep ahead, cooked fish freezes well. Wrap individual portions tightly in plastic wrap and place them inside a freezer-safe bag or container. Store for up to 2 months for best quality and thaw overnight before reheating.

Reheating

Reheat gently in a skillet on low heat or in the microwave at short intervals to avoid overcooking and drying out your fish. Adding a splash of water or broth and covering loosely will keep it moist and flaky.

FAQs

Can I cook other types of frozen fish using this method?

Absolutely! While this recipe is designed for cod, similar white fish like haddock, pollock, or tilapia will also cook beautifully in the Instant Pot using these timing and methods.

Do I need to thaw the fish before cooking?

Nope! That’s the beauty of this recipe. You can take your cod straight from frozen, saving valuable time without sacrificing taste or texture.

What if I don’t have a trivet for my Instant Pot?

If you don’t have a trivet, you can improvise with a heat-safe steaming rack or even tightly rolled aluminum foil to keep the fish elevated above the water. Just make sure the fish isn’t submerged.

Can I add other seasonings or sauces?

Definitely! Feel free to customize with garlic powder, paprika, lemon zest, or your favorite fish seasoning. You can even drizzle a little olive oil or soy sauce after cooking for extra flavor.

How do I know the fish is fully cooked?

Checking the internal temperature with a food thermometer is the safest way — aim for 140°F. The fish should also be opaque and flake easily with a fork.

Final Thoughts

This How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe is pure magic for anyone who loves delicious seafood without the fuss. Fast, easy, and reliably perfect, it’s bound to become a go-to in your kitchen for quick dinners or last-minute meals. Give it a try and enjoy flaky, flavorful fish anytime!

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How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe

How to Cook Frozen Fish in the Instant Pot in 7 Minutes Recipe
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3.9 from 9 reviews

Learn how to cook frozen fish fillets quickly and easily using an Instant Pot. This method steams the fish to tender, flaky perfection in just minutes, making it a convenient option for a healthy weeknight dinner or meal prep.

  • Author: Lilya
  • Prep Time: 2 minutes
  • Cook Time: 12 minutes (including time to come to pressure)
  • Total Time: 14 minutes
  • Yield: 4 servings
  • Category: Main Course
  • Method: Instant Pot
  • Cuisine: American
  • Diet: Low Fat

Ingredients

Fish and Seasoning

  • 1-1½ pounds cod fillet (each ½ inch thick, 4 pieces)
  • ½ teaspoon salt
  • ¼ teaspoon black pepper

Cooking Liquid

  • 1 cup water

Instructions

  1. Prepare the Instant Pot: Pour 1 cup of water into the Instant Pot insert. Place the metal trivet inside to keep the fish elevated above the water.
  2. Place the Fish: Arrange the frozen cod fillets on the trivet in a single layer. Season the fish evenly with salt and black pepper, as well as any additional seasonings you prefer.
  3. Seal and Cook: Secure the Instant Pot lid and turn the valve to the sealing position. Select the manual or pressure cook setting and set the timer for 2 minutes on high pressure. The pot will take 8 to 10 minutes to reach pressure before the cooking timer starts.
  4. Release Pressure and Check: Once cooking time is complete, perform a quick release of the pressure valve carefully. Open the lid and use a meat thermometer to check that the internal temperature of the fish is at least 140°F to ensure it is fully cooked.
  5. Additional Cooking if Needed: If the fish is not yet fully cooked, reseal the lid and cook for an additional 30 seconds at high pressure.
  6. Serve or Use in Recipes: Carefully remove the trivet with the cooked fish. Discard any remaining cooking liquid. Serve the cod fillets immediately or use them in your favorite fish recipes.

Notes

  • Ensure the fillets are evenly sized for consistent cooking.
  • Use a meat thermometer to guarantee fish is fully cooked without overcooking.
  • You can add herbs or lemon slices on top of the fish for extra flavor before cooking.
  • Be cautious when releasing pressure to avoid burns from steam.
  • This method works well for other types of white fish as well.

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