Recipe notes and tips
What is puttanesca sauce?
Puttanesca is a classic Italian tomato sauce known for its bold, savory flavors. Traditionally made with tomatoes, olives, capers, garlic, and anchovies, it has a delicious balance of saltiness, acidity, and gentle heat.
This version pairs the sauce with tender cod and zucchini noodles instead of pasta for a flavorful low carb meal.
Can I use another type of fish?
Absolutely! Haddock, pollock, or another firm white fish works well in this recipe. Adjust the cooking time depending on the thickness of the fillets.
Do I have to use anchovies?
Anchovies add a wonderful depth of flavor without making the sauce taste particularly fishy. They melt into the olive oil as they cook, creating a rich, savory base.
If you prefer to leave them out, you can add a little extra capers or olives, although the sauce will have a slightly different flavor.
How can I make the sauce richer?
For a richer, more velvety sauce, stir in 2 tbsp unsalted butter just before adding the cod. Let it melt gently into the tomato sauce before continuing with the recipe.
How spicy is puttanesca?
The suggested amount of red pepper flakes adds gentle warmth without making the sauce particularly spicy.
For more heat, increase the amount to ½ tsp or adjust according to your preference.
How do I keep zucchini noodles from getting watery?
Zucchini releases moisture as it cooks, so it’s best to prepare the noodles separately rather than adding them directly to the sauce.
Cook them quickly over medium-high heat, just until slightly softened. Avoid overcooking, and drain any excess liquid before serving.
Can I use another vegetable instead of zucchini?
Yes! Thinly sliced or shredded cabbage is a delicious alternative. You can also serve the cod puttanesca over cauliflower rice or lightly sautéed spinach.
Can I prepare this ahead?
Yes! The puttanesca sauce can be made a day ahead and stored in an airtight container in the refrigerator.
Reheat the sauce gently before adding the cod. For the best texture, cook the fish and zucchini noodles just before serving.
Storage and leftovers
Store leftover cod and puttanesca sauce in an airtight container in the refrigerator for up to 3 days.
Reheat gently over low heat until warmed through, taking care not to break up or overcook the fish. Store the zucchini noodles separately, as they may release additional moisture during storage.