This delicious recipe for cod in tomato sauce has a rich and spicy tomato base, beans, olives and perfectly cooked fish. Plus, it’s made in one pot for easy cleanup! Serve with a big hunk of bread for dunking and you’re in for one delicious treat!

Pan with cod in tomato sauce next to a dish of crushed red pepper flakes and garlic cloves.

Hi friends!

Stopping in with an easy seafood recipe that’s sure to be a fave.

Just like pesto cod or oven-baked cod, this cod in tomato sauce recipe is easy enough for weekday dinner or fancy enough for casual entertaining with friends.

With punch-ya-in-the-taste-bud flavours, like briny olives, tender cod, crushed red pepper flakes, and hearty beans, every bite is super satisfying.

I highly suggest serving with a big hunk of bread for dunking, getting every last drop of that tomato sauce.

And if you want to gild the lily here, serve with a glass of crisp white wine and you’re set!

Why We Love This Cod in Tomato Sauce Recipe

This easy seafood dinner is made in one pot for easy cleanup.
It’s made with yummy, simple, ingredients.
Of course, it tastes amazing! With a rich, slightly spicy, broth and a few special garnishes, it’s super satisfying.

How To Make Fish in Tomato Sauce

Full details are in the recipe card below, but here are the basics:

Heat some olive oil in a pan and cook diced onion, and then add minced garlic and cook until fragrant.
Stir in tomato paste and cook for a minute or so.
Pour in tomatoes and water (rinse out your empty can of tomatoes to get every last bit of that goodness), then add the seasonings, beans, olives and capers.
Cook until the sauce thickens a little.
Season cod fillets with a little salt and pepper. Then tuck them into the tomato sauce, fully submerging. Cover with lid slightly ajar and cook until the cod is cooked.
Garnish (if desired). There you have it! You’ve made some tasty, easy fish in tomato sauce that you’re gonna love!

Collage of steps to make cod in tomato sauce.

Can I Use Another Type of Fish?

Most certainly! I used fresh boneless and skinless cod fillets, but halibut, tilapia, swordfish, or haddock are other delicious options.

Speaking of fish: fresh versus frozen. I tend to find that with frozen fish fillets, especially cod, they’re more watery upon thawing than fresh.

You can use either fresh or frozen fish in this recipe. If using frozen fish, thaw before using.

Can I Use Something Besides Beans?

For sure!

While beans are super yummy, gnocchi would be another great option.

Just cook them separately and mix in with the tomato sauce once everything is done. Alternatively, portion the gnocchi and distribute the sauce over top.

Close-up of a pan with cod poached in tomato sauce.

Tips for Making This Recipe

Cook time can vary depending on the thickness of your fillets. Cook the fish until it’s cooked through, opaque and flakes easily with a fork.
As mentioned, boneless and skinless cod fillets were used here. Still, check fish over for any bones and discard.
I tucked 4 cod fillets into the tomato sauce. You can easily add another one or two fillets if you like.
Because the spicy tomato sauce is such a predominant flavour here, use good quality canned tomatoes. San Marzano is always delicious. Note: Crush the tomatoes with your hands (or roughly mash with a potato masher) so you are still left with some chunks of tomato. It’s delicious! You can dump them into a bowl and crush away. Plus, I find it oddly satisfying to crush tomatoes. I know, I’m an odd one.
If you want a thicker tomato sauce consistency, you can omit the water and reduce your tomatoes a little more before adding your fish.
Canned tomatoes can vary in salt content. Add salt to taste.
I opted to use 1 full teaspoon of crushed red pepper flakes, but you can use less of you aren’t a huge fan of spice or omit altogether. Alternatively, mix in some freshly minced chili (red Thai chili works great here).
Canned white kidney (or cannellini beans) were used, but you can use navy beans or great northern beans instead.
Dried thyme was used in the sauce, but you can use 1 tablespoon of fresh thyme if you prefer.

Spatula picking up a fillet of cod in tomato sauce from a pan.

Garnish Ideas

Freshly chopped parsley
Freshly chopped thyme, especially lemon thyme
Crushed red pepper flakes or fresh chili peppers
Drizzle of regular or lemon olive oil (so good)

Serving Suggestions

This cod recipe is super hearty and doesn’t need much, but some nicely toasted or grilled bread would be so good for mopping up that delicious tomato sauce.

Tip: After your bread is toasted, scrub a little fresh garlic clove over top to give a little extra oomph!

To make things even more substantial, serve in a shallow bowl over grits, polenta or mashed potatoes.

Serving with a green salad would be yummy too.

More Easy Seafood Recipes

If you try this recipe for cod in tomato sauce, be sure to leave a comment below!