Garlic butter cod with lemon spinach is my go-to when I want a fast, restaurant-worthy dinner that still feels light and fresh. The cod turns flaky and tender in a quick garlic-butter pan sauce, and the lemony spinach cooks down in minutes right in the same skillet.
Why you’ll love this recipe
- Fast: on the table in about 20 minutes.
- One-skillet: minimal cleanup, maximum flavor.
- Fresh and bright: lemon balances the richness of butter and garlic.
- Weeknight flexible: works with fresh or frozen cod (thawed).
Ingredients
- Cod fillets (about 1 to 1 1/2 inches thick)
- Salt and black pepper
- Olive oil
- Unsalted butter
- Garlic (minced)
- Lemon (zest and juice)
- Baby spinach
- Red pepper flakes (optional)
- Fresh parsley (optional)
How to make garlic butter cod with lemon spinach
- Prep the fish: Pat cod dry and season both sides with salt and pepper. Dry fish sears better and stays tender.
- Sear the cod: Heat olive oil in a large skillet over medium-high. Add cod and cook until golden and the fish releases easily, then flip and cook until just opaque and flaky.
- Make the garlic butter: Reduce heat to medium. Add butter and garlic and cook briefly until fragrant (don’t let the garlic brown).
- Add lemon: Stir in lemon zest and a squeeze of lemon juice to create a quick pan sauce.
- Wilt the spinach: Add spinach to the skillet and toss until just wilted. Season with a pinch of salt, pepper, and optional red pepper flakes.
- Finish and serve: Return cod to the pan (or spoon sauce over it). Taste and add more lemon juice if you want extra brightness.
Tips for perfect cod
- Choose similar-sized fillets: They’ll cook evenly.
- Don’t overcook: Cod is done when it flakes easily and looks opaque; aim for 125–130°F in the thickest part if using a thermometer.
- Mind the garlic: Garlic turns bitter if browned—keep the heat moderate once the butter goes in.
- Adjust the lemon: Start with less, then add more at the end so it stays bright instead of sharp.
Serving ideas
- Steamed rice or lemon-herb quinoa to soak up the garlic butter sauce
- Roasted baby potatoes or mashed potatoes for a cozier plate
- Crusty bread and a simple side salad
- For a low-carb option: cauliflower rice or extra sautéed veggies
Storage and reheating
- Store: Refrigerate leftovers in an airtight container for up to 2 days.
- Reheat: Warm gently in a skillet over low heat with a splash of water or broth to loosen the sauce. Avoid microwaving too long—cod can dry out fast.
- Freeze: Not ideal due to texture, but you can freeze cooked cod if needed; thaw overnight and reheat gently.
Quick variations
- Add capers: Stir in a spoonful with the lemon for a briny pop.
- Use kale: Swap spinach for chopped kale; cook a few minutes longer.
- Make it creamy: Add 1–2 tablespoons heavy cream to the pan sauce and simmer briefly.
- Try another fish: Halibut, haddock, or tilapia work with similar timing (adjust for thickness).
