1. Crank your oven to 400°F and let it preheat fully while you prep everything else. Line a baking dish with parchment paper for easy cleanup—this makes a huge difference.
2. Pat your cod fillets completely dry with paper towels. Wet fish won’t develop any color and the seasonings won’t stick properly. Lay them in the prepared baking dish with a little space between each fillet.
3. Season both sides of each cod fillet with garlic powder, paprika, salt, and black pepper. Don’t just season the top—flip them and season the bottom too. Be generous with the seasoning because cod is mild and needs it.
4. Drizzle the olive oil evenly over all four fillets—about ½ tablespoon per piece. Use your fingers or a brush to spread it around if needed.
5. Lay 3-4 lemon slices on top of each fillet, overlapping them slightly. These protect the fish and add flavor as everything bakes together.
6. Slide the dish into your preheated oven and set a timer for 12 minutes. Start checking at 12 minutes—don’t just trust the 15-20 minute range. The fish is done when it flakes easily with a fork and is opaque throughout.
7. Check by inserting a fork into the thickest part and twisting gently. If it flakes easily and there’s no translucent center, it’s done. Pull it immediately—better slightly underdone than overdone.
8. Remove from the oven and let rest for 1-2 minutes. Sprinkle with fresh chopped parsley for color and a fresh herb note.
9. Serve immediately while hot and flaky. Squeeze any extra lemon from the baked slices over the fish, or serve with fresh lemon wedges on the side.

Nutrition Information (Per Serving, 1 fillet):

• Calories: 210
• Carbohydrates: 2g
• Protein: 32g
• Fat: 8g
• Fiber: 1g
• Sodium: 520mg
• Omega-3 fatty acids: 400mg
• Vitamin C: 15mg (17% DV)
• Vitamin B12: 2mcg (83% DV)

This is an excellent source of lean protein with very few carbohydrates. Cod provides important omega-3 fatty acids and vitamin B12 while being naturally low in calories and fat.

Notes:

• Seriously, check at 12 minutes—cod overcooks faster than you think
• Pat the fish really dry before seasoning or everything just slides off
• Fresh lemon slices are essential—they protect the fish while adding flavor
• Every oven runs differently, so trust the flake test more than the timer
• Thinner fillets (under 1 inch) will cook faster, thicker ones need more time

Storage Tips:

• Store leftover fish in an airtight container in the fridge for up to 2 days
• Reheat very gently covered with foil at 300°F for 5-7 minutes
• Better yet, enjoy leftover cod cold on salads or flaked into pasta
• Don’t freeze cooked cod—it gets mushy and watery when thawed
• Make fresh each time for best texture and flavor

Serving Suggestions:

• With roasted vegetables: Asparagus, Brussels sprouts, or green beans are perfect
• Over rice or quinoa: Catch those delicious lemon juices with a grain base
• With pasta: Flake leftover cod into lemony pasta with spinach
• In tacos: Break up the fish and serve in soft tortillas with cabbage slaw

Mix It Up (Recipe Variations):

• Mediterranean Style: Add cherry tomatoes, olives, and capers around the fish before baking
• Herb-Crusted: Top with breadcrumb-herb mixture for a crispy crust
• Cajun-Spiced: Swap paprika for Cajun seasoning and serve with lime instead of lemon
• Asian-Inspired: Use sesame oil, ginger, and soy sauce instead of Mediterranean seasonings

What Makes This Recipe Special:

This baked cod recipe succeeds by respecting the delicate nature of lean white fish while using simple techniques that maximize flavor without complexity. The protective layer of lemon slices isn’t just decorative—it prevents the exposed fish from drying out in the oven’s dry heat while infusing citrus flavor. The 400°F temperature is the sweet spot that cooks the fish quickly enough to stay moist but not so hot that the outside overcooks before the inside is done. Unlike pan-frying that requires constant attention and cleanup, or poaching that can be tricky to time, baking at the right temperature with the right aromatics is foolproof once you learn to check early and trust the flake test over arbitrary timing.