Fish Cake Recipe With Mashed Potatoes: Crispy Patties With Creamy Centers

This recipe combines the best of both worlds: crispy fish cakes with creamy mashed potato centers that melt in your mouth.

I developed this method to create a dish that’s both comforting and elegant, perfect for weeknight dinners or special occasions. The fish cakes form a golden crust while the inside stays fluffy and rich.

The secret is in the texture contrast – the exterior gets perfectly browned while the potato center maintains its velvety smoothness. Each bite delivers satisfying crunch followed by creamy comfort.

Serve these warm with lemon wedges or your favorite tartar sauce. The combination of textures makes this dish truly special.

Ingredients for Fish Cake Recipe with Mashed Potatoes

Crispy fish, creamy potatoes, and a handful of pantry staples make magic happen here.

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The fish is the star here. Fresh cod or haddock from the seafood counter at Whole Foods or your local market works best—ask them to skin and debone it for you. I’ve also used tilapia in a pinch (cheaper, still tasty). For the potatoes, Russets give that fluffy mash, but Yukon Golds work if that’s what you’ve got. Just avoid waxy red potatoes—they don’t mash as smooth.

No panko? Crushed saltines or regular breadcrumbs work, but the texture won’t be as crispy. Out of fresh fish? Frozen cod (thawed and drained well) is a solid backup. Skip the milk? Heavy cream or half-and-half makes the potatoes even richer. The Dijon is key for binding, but yellow mustard in a pinch won’t ruin the dish. Old Bay not in your cabinet? Celery salt plus paprika gets you close.

These keep in the fridge for 2-3 days—reheat in a skillet to crisp the outside. Freeze uncooked patties for up to 1 month (thaw before cooking). The mashed potato centers thicken as they cool, so serve them warm for that perfect melt-in-your-mouth texture.

Step-by-Step Instructions for Fish Cakes With Mashed Potatoes

Here’s the method I use to get that perfect crisp outside and creamy inside every time.

Step 1: Prepare the Mashed Potatoes

Peel and cube the 2 lb Russet Potatoes into even pieces. Boil them in salted water for 15-20 minutes until they pierce easily with a fork. Drain well and return to the pot.

Add the 4 tbsp Butter and 0.25 cup Whole Milk, then mash until smooth. Season with 1 tsp Salt and 0.5 tsp Black Pepper. The potatoes should be creamy but thick enough to hold shape when cooled.

Step 2: Mix and Form the Fish Cakes

Finely chop the 1.5 lb Fresh Cod Fillets and place in a bowl. Add the mashed potatoes, 0.5 cup All-Purpose Flour, 1 whole Large Egg, 2 tbsp Dijon Mustard, 1 tsp Old Bay Seasoning, and thinly sliced 4 whole Green Onions. Mix gently but thoroughly.

Shape into 8 equal patties, about ½-inch thick. Press the 1 cup Panko Breadcrumbs onto both sides of each patty to create a crispy crust. Chill for 15 minutes to help them hold together.

Step 3: Pan-Fry to Golden Perfection

Heat 0.5 cup Vegetable Oil in a large skillet over medium heat. When the oil shimmers, carefully add the fish cakes. Cook for 4-5 minutes per side until golden brown and crispy.

Don’t crowd the pan—work in batches if needed. Transfer cooked cakes to a paper towel-lined plate to drain excess oil. The centers should be hot and the exterior should have a satisfying crunch.

Step 4: Finish and Serve

Zest and juice the 1 whole Fresh Lemon while the fish cakes are hot. Drizzle the juice over the cakes and sprinkle with zest. Chop the 0.25 cup Fresh Parsley and scatter it over the top for a pop of color.

Serve immediately while hot and crispy. The contrast between the creamy mashed potato-fish mixture and the crunchy panko coating makes every bite satisfying. A squeeze of lemon brightens up all the flavors.

Dietary Considerations for This Recipe

Gluten-Free Adaptations

For a gluten-free version, swap the all-purpose flour for 1:1 gluten-free baking flour (I like King Arthur Measure for Measure). Use certified gluten-free panko breadcrumbs for the coating—Kikkoman makes a great option available at most specialty stores. 💪

Dairy-Free Modifications

Replace the 4 tbsp butter with olive oil or dairy-free margarine like Earth Balance. For the 0.25 cup whole milk, unsweetened almond milk or oat milk works perfectly in the mashed potatoes.

Egg-Free Binding

If you need to skip the large egg, use 2 tbsp ground flaxseed mixed with 6 tbsp water as a binder. Let it sit for 5 minutes to thicken before mixing into the fish and potato combination.

Low-Carb Option

For fewer carbs, reduce the 2 lb Russet Potatoes to 1 lb and add 1 lb riced cauliflower to the mix. This keeps the texture while cutting the carb count nearly in half. 🌱

Shellfish Allergies

This recipe is naturally shellfish-free, but always check your Old Bay Seasoning label—some brands may contain shellfish derivatives. I recommend McCormick’s version, which is shellfish-free.

Extra Flavor Boost

Add 1 tsp smoked paprika or ½ tsp cayenne to the fish cake mix for a little heat. For a Sicilian touch, fold in 2 tbsp chopped capers and 1 tbsp chopped fresh dill—it reminds me of Nonna’s kitchen. ✨

Frequently Asked Questions