Creating this Rosemary Cream Sauce Cod & Potatoes is easy when you follow these step-by-step instructions:

1. Preheat your oven: Preheat to 400°F (200°C) for perfectly roasted potatoes.
2. Prepare Potatoes: Toss the diced potatoes in olive oil, salt, and pepper, ensuring they are evenly coated.
3. Roast Potatoes: Spread the potatoes on a baking sheet and roast for 20 minutes or until golden and crispy.
4. Cook Cod Fillets: In a skillet over medium heat, add a little olive oil and place the cod fillets. Cook for about 3-4 minutes on each side or until the fish flakes easily with a fork.
5. Make the Cream Sauce: In a small saucepan, combine the heavy cream, minced garlic, and chopped rosemary. Stir over low heat until thickened, about 3-5 minutes.
6. Combine: Pour the cream sauce over the cooked cod fillets in the skillet. Let simmer for an additional 2 minutes to absorb the flavors.
7. Serve: Plate the roasted potatoes alongside the cod, generously drizzling extra cream sauce on top if desired.

These straightforward steps will guide you toward making an unforgettable dish that balances flavors and textures wonderfully.