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Cod & Potatoes in Rosemary Cream Sauce – Creamy, Flavorful & Elegant

Enjoy a comforting and elegant meal with this Cod & Potatoes in Rosemary Cream Sauce! Tender cod fillets and perfectly cooked potatoes are bathed in a rich, creamy rosemary sauce, making it an ideal weeknight dinner or special occasion dish. Easy to prepare, full of flavor, and sure to impress your family or guests.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Main Course
Cuisine European / French-inspired
Servings 4
Calories 450 kcal

Equipment

  • Skillet or oven-safe pan
  • Saucepan for cream sauce
  • Knife and cutting board
  • Measuring Cups and Spoons
  • Optional: oven thermometer, silicone spatula

Ingredients
  

For Cod:

  • 4 cod fillets (6 oz / 170 g each), fresh or thawed frozen
  • Salt and black pepper, to taste
  • 1–2 tbsp olive oil or butter for searing

For Potatoes:

  • 1 lb (450 g) waxy potatoes (Yukon Gold, fingerling, or red), peeled and sliced evenly
  • Salt and pepper, to taste
  • 1 tbsp butter or olive oil

For Rosemary Cream Sauce:

  • 1 cup heavy cream
  • 2 tbsp butter
  • 2 cloves garlic, minced
  • 1 small onion, finely chopped
  • 1–2 sprigs fresh rosemary
  • Optional: 2 tbsp white wine, 1 tsp lemon juice, 2 tbsp grated Parmesan

Garnish:

  • Fresh rosemary sprigs, lemon wedges, or microgreens

Instructions
 

  • Prepare Potatoes: Boil or roast evenly sliced potatoes until tender; season with salt and pepper.
  • Prepare Cod: Pat fillets dry; season with salt and pepper. Sear in skillet with olive oil or butter 3–4 minutes per side until golden and flaky. Optional: bake at 375°F (190°C) for 8–10 minutes.
  • Make Rosemary Cream Sauce: Sauté garlic and onion in butter until translucent. Add cream and rosemary; simmer gently, reducing slightly. Optional: add white wine, lemon juice, or Parmesan for added flavor.
  • Assemble Dish: Layer potatoes on plates or in pan, top with cod fillets, and pour cream sauce over. Optional: briefly broil for golden tops and slight caramelization.
  • Garnish & Serve: Add fresh rosemary, lemon wedges, or microgreens before serving.

Notes

  • Use firm cod fillets to prevent breaking during cooking.
  • Slice potatoes evenly for uniform texture.
  • Simmer cream sauce gently to maintain a silky consistency.
  • One-pan version: bake potatoes, cod, and sauce together for convenience.
  • Lightened version: substitute half-and-half or milk for heavy cream.
  • Make-ahead tip: prepare cream sauce in advance; cook fish and assemble just before serving.
Keyword cod recipe, creamy cod, creamy fish dinner, elegant weeknight meals, fish and potatoes, one-pan cod, rosemary potatoes