Heat the oil in a large skillet over medium-high heat. Season the salmon on both sides with salt and pepper
Sear in the hot pan until cooked to your liking.
Once cooked, remove from the pan and set aside.
Melt the butter in a pan/pot and saute the onion.
Add in the garlic and fry until fragrant for about 1 minute.
Pour in the stock.
Add the sun-dried tomatoes and cook for a few minutes.
Reduce heat to low heat and season with salt and pepper to your taste.
Add in the spinach leaves and allow to wilt in the sauce, and add in the parmesan cheese.
Add the salmon in, sprinkle with dill and let it simmer for a bit before serving.