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Roasted Cod with Potatoes and Lemon Recipe
Ash Tyrrell

Roasted Cod with Potatoes and Lemon Recipe

I recently made this roasted cod with potatoes and lemon, and honestly, I was surprised by how effortlessly elegant it turned out. I love recipes that look fancy but require minimal effort, and this one nailed it. The combination of tender fish, crispy potatoes, and fresh lemon felt both comforting and refreshing.
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Total Time 40 minutes
Servings: 4
Ingredients Method Notes

Ingredients
  

  • 1 ½ pounds russet potatoes sliced into ¼-inch rounds – Thin slices ensure even cooking and crisp edges.
  • 3 garlic cloves minced – Fresh garlic gives a deeper flavor than pre-minced versions.
  • 2 tablespoons extra-virgin olive oil – Helps coat the potatoes and enhances roasting.
  • Salt and freshly ground black pepper – Always season in layers for the best taste.
  • 4 fresh cod fillets 6–8 ounces each – Use fresh, not frozen, for better texture and flavor.
  • 3 tablespoons unsalted butter cut into small pieces – Adds richness and keeps the fish moist.
  • 4 sprigs fresh thyme – Fresh herbs elevate the aroma and overall taste.
  • 1 lemon thinly sliced – Provides brightness and balances the richness of butter.

Method
 

  1. Start by preheating your oven to 425°F (220°C). Line a baking sheet with parchment paper to prevent sticking and ensure even cooking. This step sets the foundation for perfectly roasted ingredients.
  2. In a microwave-safe bowl, toss sliced potatoes with garlic, olive oil, salt, and pepper. Microwave them until just tender, which helps speed up roasting and ensures a creamy interior.
  3. Spread the potatoes on the baking sheet in slightly overlapping layers, forming small rectangular portions. This creates a sturdy base for the fish while allowing the edges to crisp up nicely.
  4. Pat the cod fillets dry and season them well. Place each fillet on top of the potato stacks, then add butter pieces, thyme sprigs, and lemon slices for flavor infusion.
  5. Bake everything in the oven until the fish becomes flaky and tender. The potatoes will turn golden and crisp, while the butter and lemon create a light, flavorful sauce.

Notes

  • I always pat the fish dry to help it roast instead of steam.
  • I like to slightly overlap the potatoes so they stay soft inside and crisp outside.
  • I sometimes add a few extra lemon slices for a stronger citrus flavor.
  • I’ve found that fresh thyme works much better than dried for aroma.
  • I occasionally broil for 2 minutes at the end for extra crispiness.