Low-Carb Creamy Fish Pie Recipe for Keto Diet

This keto fish pie is a simple, comforting dinner that swaps mashed potato for a cheesy cauliflower topping to keep it low carb. Tender white fish, salmon and prawns are combined in a creamy, tangy cheese sauce and finished with a golden cauliflower mash.

Fish pie is a classic British dish traditionally topped with mashed potato. In this keto version, cauliflower provides a light, flavorful alternative for the topping while cream cheese and heavy cream create a rich, low-carb sauce. The result is a hearty, satisfying meal that’s great for weeknights or a cozy weekend dinner.

Ingredients

Simple, low-carb ingredients come together to make this delicious fish pie.

Baking Tips

This recipe works well in one large dish or in individual ramekins. You can assemble the pie, cover and refrigerate it until you’re ready to bake. For a firmer top, allow the cauliflower mash to cool slightly before spooning it on.

Variations

Make the dish your own with a few substitutions or additions:

• Use smoked fish for deep, savory flavour.
• For a special occasion, add lobster or crab.
• Stir cooked spinach into the filling for extra greens.
• Sautéed mushrooms add earthiness and texture.
• Add a splash of white wine to the sauce for acidity and depth.
• Swap cheddar for smoked Gouda for a smoky twist.
• Include sliced hard-boiled eggs if you prefer a more traditional fish pie style.

Storage

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven for best texture, or use the microwave for a quicker option.

What to serve with keto fish pie

Serve with a simple green vegetable or salad. Other low-carb sides that pair well include cheesy green beans, roasted asparagus or garlic-parmesan roasted broccoli.

More Keto Fish & Seafood Recipes

Try other low-carb seafood dishes to add variety to your meal plan, such as spicy fish fritters, prawns in coconut sauce, salmon en croute, or keto shrimp Alfredo.