Sheet Pan Lemon Dill Cod is such a fresh and light dinner that practically cooks itself! The cod fillets stay tender and flaky, seasoned simply with bright lemon slices and fragrant dill that fill your kitchen with a lovely, zesty aroma. Everything bakes together on one pan, making cleanup a breeze, which is always a win in my book.
I love how straightforward this dish is—just a few minutes of prep, pop it in the oven, and you have dinner ready without much fuss. The lemon adds just the right amount of brightness to the delicate fish, and dill adds a fresh, herby touch that keeps things feeling bright and summery. I usually pat my cod dry before seasoning so the flavors stick better and the fish roasts perfectly.
For a simple, wholesome meal, I like to serve this sheet pan cod with some roasted veggies or a light salad on the side. It’s perfect for a weeknight dinner when I want something healthy and tasty without spending hours in the kitchen. Plus, the leftovers make great lunches the next day!
Key Ingredients & Substitutions
Cod Fillets: Cod is tender and mild, making it perfect for this dish. If you can’t find cod, try haddock, tilapia, or pollock—they cook similarly and work well with lemon and dill.
Baby Potatoes: These roast nicely and add great texture. You can swap for fingerling potatoes or even diced sweet potatoes for a sweeter touch.
Greens: Spinach or kale add color and nutrition. If you prefer, use Swiss chard or mustard greens for a little peppery flavor.
Lemon: Fresh lemon slices and juice are key to brightening the fish. If you want a twist, try adding a splash of lime juice instead.
Dill: Dill gives this dish a fresh, herbal note. Fresh dill is best, but dried dill works well too—just use less since dried herbs are more concentrated.
How Do You Make Sure the Cod Comes Out Tender and Flaky?
Cooking fish just right means it stays moist and flakes easily. Here’s how I do it:
- Pat the cod dry first—this helps the seasoning stick and prevents sogginess.
- Use lemon juice and olive oil in the marinade for flavor and moisture.
- Don’t overcook! Keep your oven at 400°F and bake for about 12-15 minutes, depending on thickness.
- The fish is done when it’s opaque and flakes easily when you test with a fork.
- Adding lemon slices on top protects the fish while baking and adds subtle extra lemon flavor.
Equipment You’ll Need
- Large rimmed baking sheet – I prefer this size because it holds everything in one place and bakes evenly.
- Mixing bowl – for tossing the potatoes and preparing the lemon dill marinade, making prep quick and easy.
- Measuring spoons and cups – to ensure your seasonings and liquids are just right.
- Peeler or knife – for dicing potatoes or cutting lemon slices with ease.
- Optional: parchment paper or silicone baking mat – to keep cleanup simple and prevent sticking.
Flavor Variations & Add-Ins
- Swap the lemon for lime or orange slices for a different citrus twist that pairs well with fish.
- Add chopped fresh parsley or basil along with dill for extra herby flavors.
- Include cherry tomatoes or thinly sliced bell peppers with the greens for more color and sweetness.
- Sprinkle with crushed red pepper flakes or paprika if you like a bit of heat or smoky flavor to spice things up.
Sheet Pan Lemon Dill Cod
Ingredients You’ll Need:
Main Ingredients:
- 4 cod fillets (about 6 oz each), skinless
- 1 pound baby potatoes, diced into small cubes
- 4 cups fresh spinach or kale
- 2 lemons (1 for slices, 1 for juice)
- 3 tablespoons olive oil, divided
- 2 teaspoons dried dill or 3 tablespoons fresh dill, chopped
- 3 garlic cloves, minced
- Salt and freshly ground black pepper, to taste
- Optional: 1 teaspoon dried oregano or Italian seasoning for extra flavor
How Much Time Will You Need?
This recipe takes about 10-15 minutes to prepare and roughly 30 minutes to cook. So, in total, you’re looking at around 40-45 minutes for a tasty, balanced meal that’s mostly hands-off once it’s in the oven.
Step-by-Step Instructions:
1. Prepare the Oven and Potatoes
Preheat your oven to 400°F (200°C). Lightly grease a large sheet pan or line it with parchment paper to make cleanup easier. In a medium bowl, toss the diced baby potatoes with 1 1/5 tablespoons of olive oil, salt, pepper, and half the minced garlic. Spread the potatoes evenly on one side of the sheet pan and roast for about 15 minutes until they start to soften and turn golden.
2. Prepare the Cod and Lemon Dill Mixture
While potatoes roast, pat the cod fillets dry with a paper towel. In a small bowl, mix the remaining olive oil, juice from half a lemon, dried or fresh dill, the remaining garlic, salt, and pepper. If you like, add the dried oregano or Italian seasoning for extra flavor.
3. Assemble and Bake
After the potatoes have had 15 minutes to roast, remove the sheet pan from the oven. Add the fresh spinach or kale to the empty side. Place the cod fillets on top of the greens. Spoon the lemon dill mixture evenly over each fish piece, then arrange lemon slices both on top of the cod and scattered around the potatoes. Return the pan to the oven and bake for 12-15 minutes until the cod is opaque and flakes easily with a fork, and the potatoes are tender.
4. Serve
Remove the pan from the oven and let everything cool for a couple of minutes. Garnish with fresh dill if you like. Serve the flaky lemon dill cod alongside the roasted potatoes and sautéed greens for a simple, healthy meal everyone will love.
Can I Use Frozen Cod for This Recipe?
Yes! Just be sure to thaw the cod completely before cooking. The best way is to leave it in the fridge overnight or thaw it quickly in cold water inside a sealed bag. Pat it dry thoroughly before seasoning to avoid excess moisture.
How Should I Store Leftovers?
Place any leftovers in an airtight container and refrigerate for up to 2 days. To reheat, warm gently in the oven or microwave until heated through, being careful not to overcook the fish to keep it tender.
Can I Substitute the Potatoes?
Absolutely! You can use sweet potatoes, fingerling potatoes, or even roasted carrots or parsnips instead. Just keep in mind cooking times might vary slightly with different vegetables.
What’s a Good Side Dish for Sheet Pan Lemon Dill Cod?
This recipe is great served as is since it includes greens and potatoes, but if you want extras, a simple green salad, steamed rice, or crusty bread complement the flavors nicely.