This elegant yet simple dinner features flaky cod fillets baked to perfection alongside colorful bell peppers, sweet cherry tomatoes, and aromatic red onion. Fresh lemon slices infuse the fish with bright citrus notes while dried thyme and oregano add Mediterranean depth. The entire dish comes together on one sheet pan in just 35 minutes, making it perfect for busy weeknights when you want something nutritious without spending hours in the kitchen.
The air in my tiny apartment kitchen was thick with the scent of roasting peppers and garlic, curling up to meet the ceiling fan. I had just moved in and could barely afford proper furniture, but I'd treated myself to these pristine cod fillets from the market down the street. When I pulled that baking sheet from the oven, everything golden and steaming, I realized I'd created something that made the empty boxes stacked in the corner feel irrelevant.
Last Tuesday my friend Sarah came over after a brutal day at work, still wearing her blazer and looking defeated. I slid this tray onto the counter and we stood there eating straight from the baking dish with forks, catching lemon juice and tomato juices on our chins. She looked up mid bite and said this was exactly what she needed, simple food that actually cares about you.
Ingredients
- 4 cod fillets: Choose pieces that look translucent and firm to the touch, about 150 g each
- 2 tbsp olive oil: Divide this between the vegetables and fish for even cooking
- 1 lemon: Thin slices create little steaming pouches of flavor right on the fish
- 2 tbsp fresh parsley: Sprinkle half before baking, half after for the freshest hit
- 1 tsp dried thyme: Earthy and reliable, it pairs beautifully with mild white fish
- 1 tsp dried oregano: Adds a slight Mediterranean brightness to the dish
- Salt and pepper: Season both the vegetables and the fish generously
- 1 red bell pepper: Slice these into strips, they sweeten as they roast
- 1 yellow bell pepper: The mix of colors makes the final dish look incredible
- 1 small red onion: Thin slices will caramelize alongside the peppers
- 150 g cherry tomatoes: Halved so they can blister and release their juices
- 2 garlic cloves: Mince these fine so they distribute evenly through everything
Instructions
- Preheat your oven:
- Set it to 200°C (400°F) and line a baking tray with parchment paper for the easiest cleanup ever.
- Prepare the vegetables:
- Toss the sliced peppers, onion, tomatoes, and garlic with 1 tbsp olive oil, salt, and pepper until everything's glistening.
- Arrange the bed:
- Spread the seasoned vegetables evenly across your baking tray, creating little nests for the fish to rest on.
- Season the cod:
- Place the fillets on top, drizzle with remaining olive oil, then sprinkle thyme, oregano, and half the parsley.
- Add the lemon:
- Lay a couple of lemon slices over each piece of fish like little roofs, then give everything a final seasoning.
- Bake until perfect:
- Slide into the oven for 18 to 20 minutes until the fish flakes easily and those vegetables are tender and fragrant.
- Finish and serve:
- Sprinkle the remaining parsley over everything while still hot and eat this immediately.
My sister texted me at 11 PM one night saying she needed something comforting but healthy after a long week. I told her to grab whatever vegetables she had and some white fish, sent her this method, and she called back an hour later saying she felt like she'd just eaten at a restaurant.
Choosing the Right Fish
I've learned that cod's mild flavor and flaky texture make it perfect for this kind of preparation. When you're at the fish counter, look for fillets that look moist and translucent, avoiding anything that appears dry or has brown edges. The fish should smell faintly of the ocean, nothing overpowering or fishy.
Vegetable Timing Secrets
The cherry tomatoes and bell peppers need roughly the same time to roast, which is why this combination works so beautifully together. I've tried adding harder vegetables like carrots or potatoes, but they need a head start in the oven or they'll still be crunchy when the fish is done. Keep it simple with vegetables that soften at similar rates.
Serving Suggestions
Serve this over steamed rice or quinoa to soak up all those delicious pan juices. A simple green salad with a bright vinaigrette cuts through the richness perfectly.
- Roasted potatoes on the side make this more filling for hungrier appetites
- A crisp white wine like Sauvignon Blanc complements the lemon and herbs beautifully
- Leftovers reheat surprisingly well for lunch the next day
Sometimes the simplest meals are the ones that become part of your regular rotation, the ones you make without even thinking about it.
Recipe FAQs
- → How do I know when the cod is fully cooked?
-
The cod is done when the flesh turns opaque white and flakes easily with a fork. It should reach an internal temperature of 63°C (145°F). Avoid overcooking as the fish will become dry and tough.
- → Can I use frozen cod fillets instead of fresh?
-
Yes, frozen cod works perfectly. Thaw the fillets overnight in the refrigerator or use the defrost setting on your microwave. Pat them dry with paper towels before seasoning to ensure even cooking.
- → What other vegetables work well in this dish?
-
Zucchini, asparagus, broccoli florets, or green beans all roast beautifully alongside the cod. Just adjust cooking times as needed—softer vegetables like zucchini may need less time while broccoli benefits from a few extra minutes.
- → Can I prepare this ahead of time?
-
You can chop all vegetables up to a day in advance and store them in an airtight container in the refrigerator. Season the cod just before baking to prevent the citrus from affecting the texture of the fish.
- → What sides complement this baked cod?
-
Steamed rice, quinoa, roasted potatoes, or crusty bread make excellent additions. For a low-carb option, serve over cauliflower rice or with a simple green salad dressed with light vinaigrette.