Keto Seafood Chowder – Creamy, Comforting, and Low-Carb

This keto seafood chowder brings cozy, coastal flavor without the heavy carbs. It’s rich and creamy, loaded with tender shrimp and flaky fish, and comes together in about 30 minutes. The broth is silky, the seasoning is bright, and every spoonful feels special.

If you’re craving chowder but want to keep it keto, this recipe checks all the boxes. Make it on a weeknight, serve it to guests, or batch-cook for easy lunches. It’s simple, satisfying, and surprisingly light.

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Keto Seafood Chowder - Creamy, Comforting, and Low-Carb

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Ingredients Method

Ingredients

  

• Seafood: 1/2 pound raw shrimp (peeled, deveined), 1/2 pound firm white fish like cod or haddock (cut into bite-size pieces)
• Vegetables: 1 small head cauliflower (cut into small florets), 2 ribs celery (diced), 1/2 medium onion (finely chopped), 2 cloves garlic (minced)
• Fats and liquids: 2 tablespoons butter or ghee, 1 tablespoon olive oil, 3 cups seafood or fish stock (low-sodium), 1 cup heavy cream
• Seasoning and aromatics: 1 bay leaf, 1 teaspoon smoked paprika, 1/2 teaspoon dried thyme (or 1 teaspoon fresh), 1/4 teaspoon red pepper flakes (optional), salt and black pepper to taste
• Finishing touches: 2 tablespoons chopped fresh parsley or chives, 1 tablespoon lemon juice, lemon wedges for serving
• Optional add-ins: 1/2 cup diced bacon or pancetta, 1/2 cup pre-cooked shelled clams or mussels, 1/4 teaspoon xanthan gum for extra thickness

Method

 

1. Prep the seafood: Pat shrimp and fish dry with paper towels. Season lightly with salt and pepper. This helps them sear gently and stay firm.
2. Sauté the base: In a large pot over medium heat, warm the olive oil and butter. Add onion and celery. Cook 4–5 minutes, stirring, until soft and fragrant. Add garlic and cook 30 seconds more.
3. Add seasoning: Stir in smoked paprika, thyme, red pepper flakes (if using), and a pinch of salt. Let the spices bloom for 30–60 seconds so they release their aroma.
4. Simmer the veggies: Add cauliflower florets, bay leaf, and the seafood stock. Bring to a gentle boil, then reduce to a simmer. Cook 8–10 minutes until the cauliflower is tender but not mushy.
5. Optional bacon boost: If using bacon or pancetta, cook it in a separate pan until crisp. Crumble and set aside. Spoon out some of the bacon fat and stir a tablespoon into the simmering pot for extra flavor.
6. Thicken (optional): If you prefer a thicker chowder, remove 1 cup of the soup (mostly cauliflower and liquid), blend until smooth, and return it to the pot. For an even thicker finish, sprinkle in a tiny pinch (up to 1/4 teaspoon) of xanthan gum while whisking. Simmer 1–2 minutes.
7. Add the cream: Lower the heat to medium-low and pour in the heavy cream. Stir gently and let it warm through. Avoid a rolling boil after adding cream.
8. Cook the seafood: Add the fish first and simmer 3–4 minutes. Add the shrimp and cook another 2–3 minutes, until the shrimp are pink and opaque and the fish flakes easily. Don’t overcook.
9. Finish and taste: Stir in lemon juice and most of the herbs. Adjust salt and pepper. If adding clams or mussels, fold them in now just to warm.
10. Serve: Ladle into bowls, top with remaining herbs and crispy bacon (if using). Serve with lemon wedges. Enjoy hot.

What Makes This Recipe So Good

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• Full-on chowder vibes without potatoes: Cauliflower and celery give body and texture without the carbs.
• Ultra-creamy but not heavy: A mix of heavy cream and seafood stock creates a rich, spoon-coating broth that stays light.
• Quick-cooking protein: Shrimp and white fish cook fast, making this a weeknight-friendly recipe.
• Balanced flavors: Aromatics, a touch of smoky paprika, and lemon add depth and brightness.
• Easy to customize: Swap in scallops, clams, or salmon.

  Adjust the spice and herbs to suit your taste.

What You’ll Need

• Seafood: 1/2 pound raw shrimp (peeled, deveined), 1/2 pound firm white fish like cod or haddock (cut into bite-size pieces)
• Vegetables: 1 small head cauliflower (cut into small florets), 2 ribs celery (diced), 1/2 medium onion (finely chopped), 2 cloves garlic (minced)
• Fats and liquids: 2 tablespoons butter or ghee, 1 tablespoon olive oil, 3 cups seafood or fish stock (low-sodium), 1 cup heavy cream
• Seasoning and aromatics: 1 bay leaf, 1 teaspoon smoked paprika, 1/2 teaspoon dried thyme (or 1 teaspoon fresh), 1/4 teaspoon red pepper flakes (optional), salt and black pepper to taste
• Finishing touches: 2 tablespoons chopped fresh parsley or chives, 1 tablespoon lemon juice, lemon wedges for serving
• Optional add-ins: 1/2 cup diced bacon or pancetta, 1/2 cup pre-cooked shelled clams or mussels, 1/4 teaspoon xanthan gum for extra thickness

Step-by-Step Instructions

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1. Prep the seafood: Pat shrimp and fish dry with paper towels. Season lightly with salt and pepper. This helps them sear gently and stay firm.
2. Sauté the base: In a large pot over medium heat, warm the olive oil and butter.

   Add onion and celery. Cook 4–5 minutes, stirring, until soft and fragrant. Add garlic and cook 30 seconds more.

3. Add seasoning: Stir in smoked paprika, thyme, red pepper flakes (if using), and a pinch of salt.

   Let the spices bloom for 30–60 seconds so they release their aroma.

4. Simmer the veggies: Add cauliflower florets, bay leaf, and the seafood stock. Bring to a gentle boil, then reduce to a simmer. Cook 8–10 minutes until the cauliflower is tender but not mushy.
5. Optional bacon boost: If using bacon or pancetta, cook it in a separate pan until crisp.

   Crumble and set aside. Spoon out some of the bacon fat and stir a tablespoon into the simmering pot for extra flavor.

6. Thicken (optional): If you prefer a thicker chowder, remove 1 cup of the soup (mostly cauliflower and liquid), blend until smooth, and return it to the pot. For an even thicker finish, sprinkle in a tiny pinch (up to 1/4 teaspoon) of xanthan gum while whisking.

   Simmer 1–2 minutes.

7. Add the cream: Lower the heat to medium-low and pour in the heavy cream. Stir gently and let it warm through. Avoid a rolling boil after adding cream.
8. Cook the seafood: Add the fish first and simmer 3–4 minutes.

   Add the shrimp and cook another 2–3 minutes, until the shrimp are pink and opaque and the fish flakes easily. Don’t overcook.

9. Finish and taste: Stir in lemon juice and most of the herbs. Adjust salt and pepper.

   If adding clams or mussels, fold them in now just to warm.

10. Serve: Ladle into bowls, top with remaining herbs and crispy bacon (if using). Serve with lemon wedges. Enjoy hot.

Storage Instructions

• Refrigerator: Cool completely, then store in an airtight container for up to 3 days.
• Freezer: Cream-based soups can separate when frozen.

  If you plan to freeze, store the chowder before adding the cream and lemon. Freeze up to 2 months. Thaw, reheat gently, then add cream and lemon just before serving.

• Reheating: Warm over low heat, stirring often.

  Avoid boiling to keep the cream from curdling and the seafood from becoming tough.

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Health Benefits

• Low-carb and keto-friendly: Cauliflower replaces potatoes, keeping net carbs low while maintaining that classic chowder feel.
• High-quality protein: Shrimp and white fish deliver lean protein that supports muscle and satiety.
• Omega-3s: Depending on the fish you use, you’ll get heart-healthy omega-3 fatty acids that support brain and cardiovascular health.
• Nutrient-dense vegetables: Cauliflower and celery add fiber, vitamin C, vitamin K, and antioxidants without spiking carbs.
• Healthy fats: Cream and olive oil boost satisfaction and help with fat-soluble nutrient absorption, which suits a keto lifestyle.

Pitfalls to Watch Out For

• Overcooking seafood: Shrimp and fish turn rubbery if boiled hard or cooked too long. Keep the heat gentle.
• Boiling after cream: A rolling boil can cause separation. Simmer softly once dairy is added.
• Too much thickener: Xanthan gum works fast.

  Start with a tiny pinch to avoid a gummy texture.

• Salty stock: Seafood stock can be salty. Taste before adding extra salt, especially if using bacon.
• Big cauliflower chunks: Cut florets small for even cooking and a classic chowder spoon feel.

Variations You Can Try

• Salmon chowder: Swap white fish for salmon pieces. Add a little dill and extra lemon.
• Clam-style: Stir in chopped clams and a splash of clam juice.

  Keep the rest of the seafood simple.

• Bacon and scallop: Crisp bacon, then sear scallops in the fat. Add to the chowder at the end.
• Coconut cream twist: Replace half the heavy cream with full-fat coconut milk for a dairy-light, slightly sweet finish. Add a touch of ginger and lime.
• Spicy Cajun: Use Cajun seasoning instead of paprika and thyme.

  Finish with hot sauce and parsley.

• Veggie boost: Add a handful of chopped spinach or kale at the end until just wilted.

FAQ

Can I make this dairy-free and still keep it keto?

Yes. Use full-fat coconut milk or coconut cream in place of heavy cream and ghee or extra olive oil instead of butter. The flavor will be slightly different, but still rich and satisfying.

What’s the best fish for chowder?

Firm, mild white fish like cod, haddock, halibut, or pollock work well.

They hold their shape and don’t overpower the broth. Salmon is great too, but it brings a stronger flavor.

How can I thicken the chowder without flour?

Blend a portion of the cauliflower and broth to create body, or use a tiny pinch of xanthan gum. Both methods keep it low-carb while delivering a creamy texture.

Is store-bought seafood stock okay?

Absolutely.

Choose a low-sodium version with clean ingredients. If you can’t find seafood stock, chicken broth works in a pinch, but the flavor will be less “ocean-forward.”

Can I use frozen seafood?

Yes, just thaw completely and pat dry before cooking. Excess moisture can water down the chowder and affect texture.

How many carbs are in a serving?

Exact numbers vary by ingredients and brands, but expect roughly 6–9 net carbs per serving for this style of keto chowder.

For precise macros, plug your ingredients into a nutrition calculator.

What if I don’t like cauliflower?

You can reduce the amount or swap part of it with diced rutabaga or celery root in small quantities. Just note that those options add a few more carbs.

Can I meal prep this?

Yes. Cook as directed, cool, and portion into containers.

Reheat gently all week. For best texture, add fresh herbs and lemon right before serving.

Final Thoughts

Keto seafood chowder proves you don’t need potatoes or flour to enjoy a creamy, comforting bowl. With simple ingredients, quick-cooking seafood, and smart swaps, you get classic chowder texture and flavor that fits your goals.

Keep the heat gentle, season to taste, and don’t skip the lemon—those small steps make all the difference. Whether it’s a cozy night at home or a make-ahead lunch, this chowder is a keeper.

About the Author

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Brandon D

Blogger/Fitness & Wellness Coach

I create quick, healthy, family-friendly recipes that make dinner simple, delicious, and stress-free.