Easy Instant Pot Mayo Haddock (15-Minute Recipe)

Dinner, Seafood

March 12, 2026

Tired of complicated weeknight dinners? Say hello to your new go-to fish recipe! This Instant Pot Mayo Haddock is the definition of simple elegance. A luscious, creamy sauce made with mayonnaise, lemon, and dill perfectly coats tender, flaky haddock, all cooked to perfection in a mind-blowing 15 minutes. It’s a healthy, low-carb meal that tastes like you spent hours in the kitchen. Let’s get cooking!

Ingredients

• 1 pound / 450g Haddock fillets
• 2 tbsp Mayonnaise
• ½ cup / 120ml Vegetable Stock
• 2 tbsp Lemon Juice, freshly squeezed
• 1 tsp chopped fresh Dill
• 1 tsp Olive Oil
• ¼ tsp Old Bay Seasoning

Instructions

1. Directions
2. In the inner pot of your Instant Pot, whisk together the vegetable stock, mayonnaise, fresh lemon juice, chopped dill, olive oil, and Old Bay seasoning until smooth.
3. Gently place the haddock fillets into the sauce, turning them once to coat.
4. Secure the lid and set the steam release valve to the ‘Sealing’ position.
5. Select the ‘Manual’ or ‘Pressure Cook’ setting and cook on HIGH pressure for 7 minutes.
6. Once the cooking cycle is complete, perform a quick release by carefully moving the steam release valve to the ‘Venting’ position.
7. Open the lid, carefully remove the haddock, and serve immediately with a spoonful of the delicious sauce from the pot. Enjoy!

Nutritional Information

• Nutrition Per Serving
• Calories: 165
• Total Fat: 12g
• Net Carbs: 4g
• Protein: 14g
• Fiber: 1g

Pro Tips

• This recipe works beautifully with other firm white fish like cod, pollock, or tilapia. Adjust cooking time by a minute or two for thicker or thinner fillets.
• For an extra burst of flavor, add a tablespoon of capers or a pinch of red pepper flakes to the sauce before cooking.
• Serve this creamy haddock over a bed of quinoa, cauliflower rice, or with a side of steamed asparagus for a complete, healthy meal.
• If using frozen haddock fillets, there’s no need to thaw! Simply add them directly to the pot and cook for the same amount of time.

FAQ

Q: Can I use a different type of fish for this recipe
A: Yes, this recipe works beautifully with other firm white fish like cod, pollock, or tilapia. Just be sure to adjust the cooking time by a minute or two depending on the thickness of the fillets.

Q: Do I need to thaw frozen haddock first
A: No, you do not need to thaw frozen haddock. You can place the frozen fillets directly into the Instant Pot and cook for the same amount of time.

Q: What can I serve with this Instant Pot haddock
A: For a complete and healthy meal, serve this creamy haddock over a bed of quinoa, cauliflower rice, or with a side of steamed asparagus.

Q: How can I add more flavor to the sauce
A: To enhance the flavor, you can add a tablespoon of capers or a pinch of red pepper flakes to the sauce before you begin pressure cooking.

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