There is something inherently grounding about a sheet-pan dinner. When I come home after a long day in the kitchen, I crave simplicity that doesn't sacrifice soul. This baked cod with sweet potato wedges has become a staple in my rotation because it hits that rare trifecta: it's incredibly nutrient-dense, it smells heavenly as it roasts, and it leaves very little to clean up.

The cod, with its mild, buttery flavor, acts as a pristine canvas for the bright, aromatic punch of fresh lemon and garlic. Meanwhile, the sweet potatoes provide a gentle, caramel-like sweetness that contrasts beautifully with the savory, flaky fish. You aren't just eating a meal here; you’re fueling your body with high-quality amino acids and complex fibers that keep you steady long after the last bite.

1. Prep the oven and the spuds: Preheat your oven to 400°F (200°C). Arrange your sweet potato wedges on a large, heavy-duty baking sheet. Drizzle with olive oil, then dust them with smoked paprika, salt, and pepper. Toss them directly on the pan with your hands until every edge is glistening. Spread them out so they aren't crowded—we want them to roast, not steam. Slide them into the oven for 20 minutes.
2. Season the fish: While the potatoes develop their golden edges, pat your cod fillets very dry with a paper towel. Moisture is the enemy of a nice texture here. Rub the minced garlic over each fillet and season generously with salt, pepper, and a pinch of dried oregano.
3. Bring it all together: Once the timer dings, remove the sheet pan. The potatoes should be tender and just starting to brown. Push them to the edges of the pan to create a "nest" in the center. Carefully lay your seasoned cod fillets in that space. Top each piece of fish with one or two lemon slices.
4. The final bake: Return the pan to the oven for another 12–15 minutes. You’ll know the cod is ready when it is opaque throughout and flakes gently under the pressure of a fork. The smell of roasted garlic and citrus should fill your kitchen. Garnish with a heavy handful of fresh parsley before serving.

This dish is surprisingly friendly to meal prep. You can slice the sweet potatoes the night before and keep them in a bowl of cold water in the fridge (drain and dry them well before roasting).

Leftovers hold up well for 2–3 days in an airtight container in the refrigerator. When reheating, avoid the microwave if possible, as it tends to make the fish rubbery. Instead, place the fish and potatoes back on a baking sheet and heat in the oven at 350°F for about 8–10 minutes until just warmed through. Add a fresh squeeze of lemon juice after reheating to "wake up" the flavors.