Recipe

Cozy Tomato Fish Soup

Bright tomato broth, tender white fish, and a lemony finish. Cozy enough for a Sunday, easy enough for a Tuesday.

By Matt Campbell

•

4.8

A steaming bowl of tomato-based fish soup with chunks of white fish, herbs on top, and a lemon wedge on the side on a simple wooden table setting

Fish soup has two modes: watery and sad, or shockingly good with very little effort. We are firmly aiming for the second. This version is my weeknight sweet spot: a tomato-forward broth that tastes like it spent all day simmering, plus tender white fish that flakes with a nudge.

We build flavor fast with fennel and garlic, bloom a little tomato paste, then let canned tomatoes and broth do the heavy lifting. The only real rule is this: do not overcook the fish. Slide it in at the end, keep the simmer gentle, and you get silky chunks instead of fish confetti.

All ingredients for fish soup arranged on a bright kitchen counter, including canned tomatoes, fish fillets, fennel, onion, garlic, lemon, herbs, and broth

Why It Works

Bold, cozy broth from tomato paste, canned tomatoes, and a quick simmer with aromatics.
Tender fish every time because it cooks gently right at the end.
Restaurant-y finish with lemon zest and juice for that clean, bright pop.
Flexible: swap the fish, add shrimp, toss in greens, or stretch it with beans.

Pairs Well With

Storage Tips

Refrigerate: Cool the soup quickly, then store in an airtight container for up to 3 days. Fish is best sooner rather than later, but this holds up nicely.

Reheat: Warm gently over medium-low heat until just hot. Avoid a hard boil or the fish can get tough and break apart.

Freeze: You can freeze it, but the fish texture will soften. If you know you want freezer soup, freeze the broth base and add fresh fish when reheating. Broth base freezes well for up to 2 months.

Common Questions

What kind of fish works best in fish soup?

Go for firm, mild white fish that holds together: cod, haddock, halibut, pollock, or grouper. Salmon is also great if you want a richer vibe. Avoid super delicate fish unless you are okay with it breaking up.

Can I use frozen fish?

Yes. Thaw in the fridge overnight if you can. In a pinch, you can add frozen fish directly, but it can drop the soup temperature and release extra water. Just keep the simmer gentle and cook a few minutes longer.

How do I keep the fish from falling apart?

Cut it into larger chunks, keep the soup at a gentle simmer, and stir as little as possible after the fish goes in. Think: nudge, do not whip.

Can I make this without wine?

Absolutely. The wine adds a little acidity and depth, but you can skip it. If you want that lift, add an extra squeeze of lemon at the end.

Is this fish soup spicy?

Only if you want it to be. Red pepper flakes are optional. Start with a pinch, taste, then decide if you want more heat.

A large pot on a stovetop with tomato fish soup gently simmering, visible fennel slices and herbs in the broth

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

Large Dutch oven or heavy-bottom pot (5 to 7 quarts)
Chef’s knife and cutting board
Wooden spoon
Microplane or fine grater (for lemon zest, optional but nice)
Ladle

I started making fish soup when I realized I wanted “seafood dinner” energy without the full restaurant production. This is the version I keep coming back to because it feels a little fancy, but it is basically just smart pantry cooking. Also, it gives you permission to tear off a ridiculous hunk of bread and dunk it with confidence, which is the kind of kitchen behavior I fully support.

Cozy Tomato Fish Soup

(4.8 Reviews)

Prep Time 15 minutes

Cook Time 30 minutes

Total Time 45 minutes

Servings 4 to 6

Ingredients

2 tablespoons olive oil
1 medium yellow onion, diced
1 small fennel bulb, trimmed and thinly sliced (fronds reserved for garnish)
4 cloves garlic, minced
1 teaspoon kosher salt, plus more to taste
1/2 teaspoon black pepper
1/2 teaspoon red pepper flakes (optional)
2 tablespoons tomato paste
1/2 cup dry white wine (optional)
1 (28-ounce) can crushed tomatoes
3 cups seafood stock or chicken stock
Up to 1 cup water (as needed to loosen)
1 bay leaf
1 teaspoon dried oregano (or 1 tablespoon chopped fresh)
1 pound firm white fish (cod, haddock, halibut), cut into 1 1/2-inch chunks
1 tablespoon lemon zest
2 tablespoons lemon juice, plus more to taste
2 tablespoons chopped fresh parsley (or fennel fronds)
Optional add-ins: 1 cup cooked white beans, 2 cups baby spinach, or 1/2 pound peeled shrimp

Chunks of raw cod on a cutting board beside a knife, with lemon and parsley nearby on a home kitchen counter

Instructions

Soften the aromatics. Heat olive oil in a large pot over medium heat. Add onion and fennel. Cook 6 to 8 minutes, stirring occasionally, until softened and lightly golden at the edges.
Add garlic and bloom the tomato paste. Stir in garlic, salt, pepper, and red pepper flakes (if using). Cook 30 seconds. Add tomato paste and cook 1 to 2 minutes, stirring, until it darkens slightly and smells sweet.
Deglaze. Pour in the wine (if using) and scrape up any browned bits. Simmer 1 to 2 minutes to reduce slightly.
Build the broth. Add crushed tomatoes, stock, bay leaf, and oregano. Bring to a simmer, then lower the heat and simmer gently for 15 minutes. If it looks too thick for your liking, add water a splash at a time, up to 1 cup total.
Add any extras. If using beans, stir them in now and warm for 2 to 3 minutes. If using spinach, stir it in and let it wilt for 1 to 2 minutes.
Cook the fish gently. Add the fish chunks and keep the soup at a gentle simmer, not a rolling boil. Cook 4 to 8 minutes, just until the fish turns opaque and flakes easily. For extra certainty, aim for about 125 to 130°F (52 to 54°C) in the thickest piece. If adding shrimp, add them now and cook 2 to 3 minutes until pink.
Finish bright. Turn off the heat. Fish out the bay leaf. Stir in lemon zest, lemon juice, and parsley or fennel fronds. Taste and adjust salt, pepper, and lemon.
Serve. Ladle into bowls and serve with crusty bread. If you want to get extra, drizzle a little olive oil on top.