1. Preheat your oven to 375°F (190°C). This is crucial to ensure everything cooks evenly.
2. In a large bowl, toss the sliced potatoes with olive oil, garlic powder, onion powder, salt, and pepper. Arrange them in a single layer in a baking dish.
3. Bake the potatoes in the preheated oven for 25 minutes, or until they start to soften. This step is important because it ensures the potatoes are cooked through by the end.
4. Remove the dish from the oven and place the salmon fillets on top of the potatoes. Season the salmon with a pinch of salt and pepper, and lay lemon slices over each fillet.
5. Pour the heavy cream evenly over the salmon and potatoes, then sprinkle Parmesan cheese over the entire dish. This adds a creamy, cheesy layer that ties everything together.
6. Return the dish to the oven and bake for another 20-25 minutes, or until the salmon is cooked through and flakes easily with a fork.
7. Garnish with fresh dill before serving. It’s a small step that adds a burst of freshness and color to the dish.

From my experience, using fresh ingredients is key to maximizing flavor. The creaminess of the sauce combined with the tang of lemon and richness of salmon creates a harmonious balance that’s simply irresistible.