Baked Cod Croquettes
Tender flakes of mild cod folded into creamy mashed potato with garlic, grated onion, and fresh parsley, shaped into croquettes and baked until golden.
Why You'll Love This Recipe
These baked cod croquettes are a gentle, comforting bite for anyone who loves seafood but wants something lighter than a fried version. The cod is mild and flaky, the mashed potato makes them soft and filling, and the whole thing bakes on a sheet pan instead of a fryer. They suit a cook who wants a warm handheld snack that feels a little special without much fuss, and they are friendly to serve to children and to people who are cautious about strong fishy flavors.
Flaked cod and mashed potato, in the right proportion. Poaching the cod keeps it moist and easy to break into fine flakes, and folding it into potato that has cooled first means the egg can bind everything without scrambling. The grated onion and minced garlic melt into the mixture so you taste them without any raw bite, while parsley keeps the flavor fresh and bright. A light brush of olive oil is what lets the outsides turn golden and firm in the oven.
They are satisfying because they combine mild, flaky protein from the cod with the soft, starchy comfort of potato, so a couple of them take the edge off hunger. Cod is a mild source of protein, the olive oil adds a little richness and heart-friendly fat, and the parsley and garlic add flavor without leaning on heavy sauces or breading. It is a snack that feels indulgent while staying clean and simple.
Ingredients
- 2 cod fillets
- 1 1/4 cups cooked mashed potato
- 1 large egg
- 2 cloves garlic, minced
- 4 tbsp chopped parsley
- 1/2 small onion, grated
- 1 tbsp olive oil
- 1/4 tsp salt
Instructions
- Preheat and prep the pan: Preheat the oven to 400°F (200°C) and line a sheet pan with parchment paper.
- Cook and flake the cod: Bring a wide pan of lightly salted water to a gentle simmer. Slip in the cod fillets and poach until the flesh turns opaque and flakes easily with a fork, about 6 to 8 minutes depending on thickness. Lift the fillets out, let them cool a few minutes, then flake into fine pieces with a fork, checking for and removing any small bones or skin.
- Make the mashed potato: Peel and cube the potatoes, then boil in salted water until fork-tender, about 15 minutes. Drain well and mash smooth with a potato masher. Spread the mash out to cool so the mixture is not hot when the egg goes in.
- Mix the croquette base: Peel and grate the onion, mince the garlic, and finely chop the parsley. In a large bowl, combine the flaked cod, cooled mashed potato, egg, garlic, parsley, grated onion, and salt. Fold together gently with a spoon until evenly blended into a soft, shapeable mixture.
- Shape the croquettes: With clean, slightly damp hands, scoop portions of the mixture and roll into oval croquettes, pressing firmly so they hold together, and set them spaced apart on the lined pan. Brush the tops and sides lightly with olive oil.
- Bake until golden: Bake for 20 to 22 minutes, turning each croquette once about halfway through, until the outsides are golden and firm. Let them cool briefly on the pan to set before serving.
Variations
- Lemon and dill: Fold in fresh dill and a little grated lemon zest in place of some of the parsley for a brighter, cleaner seafood flavor.
- Smoky paprika: Stir smoked paprika into the mixture for a warm, gently smoky note that plays well with the cod and potato.
- Cheesy top: Sprinkle grated hard cheese over the croquettes before baking for a savory, browned crust; this adds dairy.
- Green onion and chili: Swap the grated onion for finely sliced green onion and add a pinch of chili flakes for a little heat and a fresher onion bite.
- Salmon swap: Use flaked cooked salmon in place of the cod for a richer, deeper flavor and a rosier color; this changes the fish.
Storage & Leftovers
Store cooled croquettes in an airtight container in the refrigerator for up to three days. Keep them in a single layer if you can, so the crisp outsides do not soften against each other.
To reheat, warm them in a 375°F (190°C) oven or toaster oven for about 8 to 10 minutes until heated through and the outside firms up again. Avoid the microwave if you can, since it turns the outsides soft and a little rubbery.
To make ahead, shape the croquettes and keep them uncooked and covered in the refrigerator for up to a day, then brush with olive oil and bake fresh when you want them. The shaped mixture also holds better once chilled, which makes them easier to move onto the pan.
Notes & Tips
- Pick the right cod: Look for firm, translucent fillets that smell clean and briny, not fishy. Thicker center-cut pieces poach more evenly than thin tail ends.
- Let the potato cool first: Warm mashed potato will start to cook the egg and make the mixture loose. Spreading it out to cool speeds this up and gives you a firmer base to shape.
- Squeeze the onion: Grated onion releases a lot of liquid. Press it in your hand or a paper towel before adding it, so the mixture is not too wet to hold its shape.
- Test one first: If your mixture feels too soft to shape, bake a single test croquette; if it spreads, the mash was likely too wet or too warm, and chilling the mixture for a few minutes fixes it.
- Adjust the seasoning: Taste the raw mixture on the tip of a spoon after mixing and add a little more salt or parsley if it tastes flat before you shape the whole batch.
- Serve alongside: These are good warm with a squeeze of lemon and a simple green salad, or with a spoon of plain yogurt or a garlicky dip on the side.
Nutrition & Mindful Eating
- Potato and cod are made for each other in a croquette. The potato gives body and a mild starchy sweetness, the fish breaks into soft flakes through it, and the egg binds the two so each one holds its shape, protein and comforting carbohydrate in the same bite.
- Cod is gentle enough to disappear into the potato while still tasting like fish, which is what keeps these from being potato cakes, and it brings the protein that makes a couple of them a real snack.
- Potato is the reason the inside stays fluffy. Cooked and mashed, it holds moisture through the whole bake, and it carries potassium and a slow, satisfying starch that gives these croquettes their weight.
- Softened onion and garlic go into the mix itself, so the flavor runs right through the croquette rather than sitting on the surface, and the parsley chopped in at the end gives a green, peppery lift.
- Baked with a brush of olive oil, the outside dries and browns into a thin crust while the middle steams itself soft, which is where the contrast between the crackle and the give comes from.
- As you eat, break one in half and let the steam and the smell of potato and parsley come up before you take the bite, then eat them a couple at a time on a plate.
Frequently Asked Questions
My croquettes fell apart in the oven. What went wrong?
The most common cause is a mixture that is too wet or too warm. Make sure the mashed potato has cooled, squeeze the liquid from the grated onion, and press each croquette firmly when shaping. Chilling the shaped croquettes before baking also helps them hold.
Can I use frozen cod?
Yes. Thaw it fully in the refrigerator first and pat it dry before poaching, since excess water will make the mixture too loose. Frozen cod flakes just as well as fresh once cooked.
How do I know the cod is cooked before I flake it?
It should turn from translucent to opaque white and flake apart easily when you press it with a fork. For a poached fillet this usually takes about 6 to 8 minutes at a gentle simmer.
Can I make these crispier?
Baking gives a golden, firm outside rather than a deep-fried crunch. For more crispness, brush a little extra olive oil on all sides, give them room on the pan so steam escapes, and turn them once during baking.