Today I want to share one of my favorite weeknight dinners: air fryer lemon butter cod. It’s light, buttery, and ready in about 15 minutes from start to finish.
Cod is such a great fish to cook with because it has a mild flavor and stays nice and tender. The lemon butter sauce gives it just enough brightness without covering up the natural taste of the fish.
I love that this recipe doesn’t need any fancy ingredients. Just a few pantry basics, some fresh lemon, and a bit of dill to finish it off.
The air fryer does most of the work here. You get a lightly golden top and flaky, juicy fish inside without having to stand over a hot pan.
If you’re new to cooking fish at home, this is a good one to start with. It’s pretty hard to mess up, and the results taste like something from a nice restaurant.
Why You’ll Love This Recipe
Buttery Lemon Flavor – The melted butter mixed with fresh lemon juice and zest soaks into every bite for a bright, rich taste.
Perfectly Flaky Texture – The air fryer cooks the cod just right, leaving it tender and flaky on the inside with lightly golden tops.
Healthy and Light – Cod is low in fat and packed with lean protein, so you can enjoy a filling meal without feeling heavy after.
Ingredients
- 4 Cod Fillets (about 6 oz each)
- 2 tbsp Unsalted Butter, melted
- 2 tbsp Fresh Lemon Juice
- 1 tsp Lemon Zest
- 2 Garlic Cloves, minced
- 1/2 tsp Salt
- 1/4 tsp Black Pepper
- 1/2 tsp Paprika
- 1 tbsp Fresh Dill, chopped
- Lemon Slices, for serving
How To Make
Step 1
Pat the cod fillets dry with paper towels. In a small bowl, whisk together melted butter, lemon juice, lemon zest, garlic, salt, pepper, and paprika.
Step 2
Brush the lemon butter mixture generously over all sides of each cod fillet.
Step 3
Preheat the air fryer to 370°F (185°C). Place the cod fillets in the basket in a single layer.
Step 4
Air fry for 10 to 12 minutes until the fish flakes easily with a fork and the tops are lightly golden.
Step 5
Sprinkle with fresh dill and serve immediately with lemon slices.
Tips
Pat the Cod Really Dry Before Brushing
Cod holds a lot of water, and if you skip drying it well, the butter mixture will just slide off into the basket.
I press each fillet between paper towels for a good 30 seconds on both sides. You want the surface to feel almost tacky, not wet or slippery.
From my experience, this one step is what makes the difference between a golden top and a sad, pale, watery fish.
Pick Fillets That Are the Same Thickness
Cod fillets often come in funny shapes, with one thick end and one thin tail end. The thin parts will be done way before the thick parts, so you end up with dry edges and raw middles.
I recommend picking fillets that are evenly thick all the way across, around 1 inch if you can find them. If yours have super thin tail ends, just fold the thin part under itself so the whole piece sits at one even thickness.
Melt the Butter but Don’t Let It Get Hot
You want the butter just barely melted, soft and pourable but not steaming. If the butter is too hot when you add the garlic and lemon juice, the garlic starts to cook and turns bitter before the fish even hits the air fryer.
My favorite trick here is to melt the butter in 10-second bursts in the microwave and stop as soon as there’s still one tiny piece left floating in it. The leftover heat finishes melting it without cooking anything.
Related Recipes
- Air Fryer Cajun Cod Fillets
- Air Fryer Cod Panko
- Air Fryer Lemon Garlic Tilapia
- Air Fryer Halibut
- Air Fryer Garlic Butter Scallops
Frequently Asked Questions
Can I use frozen cod fillets without thawing them first?
It is best to thaw the cod fully before air frying so the butter mixture sticks properly and the fish cooks evenly. Frozen fillets will release water as they cook, which can make the coating slide off and leave the fish soggy instead of golden.
To thaw quickly, place the sealed fillets in a bowl of cold water for about 30 minutes. Pat them very dry with paper towels before brushing on the lemon butter.
Air Fryer Lemon Butter Cod
- 4 Cod Fillets (about 6 oz each)
- 2 tbsp Unsalted Butter, melted
- 2 tbsp Fresh Lemon Juice
- 1 tsp Lemon Zest
- 2 Garlic Cloves, minced
- 1/2 tsp Salt
- 1/4 tsp Black Pepper
- 1/2 tsp Paprika
- 1 tbsp Fresh Dill, chopped
- Lemon Slices, for serving
- Pat the cod fillets dry with paper towels. In a small bowl, whisk together melted butter, lemon juice, lemon zest, garlic, salt, pepper, and paprika.
- Brush the lemon butter mixture generously over all sides of each cod fillet.
- Preheat the air fryer to 370°F (185°C). Place the cod fillets in the basket in a single layer.
- Air fry for 10 to 12 minutes until the fish flakes easily with a fork and the tops are lightly golden.
- Sprinkle with fresh dill and serve immediately with lemon slices.