Bake Garlic Butter Baked Salmon In Lemony Parmesan Cream for a silky, herb-bright dinner the whole family will love.
Preheat the oven to broil. Pat the salmon fillets dry and season both sides generously with salt and black pepper. In an oven-safe cast-iron skillet place one tablespoon of salted butter, scatter fresh thyme leaves and lightly smashed garlic cloves around the pan, then nestle the seasoned fillets in the skillet so their top surfaces contact the herb-and-butter bed — this sets the stage for a quick broil that will create a golden, slightly crisped exterior while keeping the interior moist and glossy.
Broil the salmon 5–8 minutes just until the tops begin to brown and the edges show a delicate crispness; the flesh should still look plump and slightly translucent in the thickest part. Remove the skillet from the broiler and transfer the fillets to a resting plate, leaving the flavored butter, thyme and garlic in the skillet. Resting the fish now preserves the seared texture while you build the sauce — the reserved butter, fond, and garlic will form the aromatic backbone of the cream.
Return the skillet (off any heat surface) and, using the remaining butter, gently sweat the thinly sliced shallot with a pinch of chili flakes until fragrant and soft. Press the smashed garlic into a paste against the pan so it melds into the butter. Pour in the heavy cream and the salsa verde, stirring to combine until the mixture becomes a glossy, homogeneous cream. Keep the motion steady so the emulsion stays smooth and slightly thickened.
Stir in the grated Parmesan, chopped sun-dried tomatoes, and the fresh baby spinach, cooking just until the cheese melts into the cream and the spinach wilts into tender dark-green folds; the sauce should be thick, clingy and flecked with tomato and herb. Slide the rested salmon fillets back into this lemony, nutty Parmesan cream so the sauce laps up the sides of the fish, then finish with a bright tablespoon of lemon juice to lift the flavors. The surface now shows glossy cream, melted cheese ribbons, wilted greens, and the salmon cutouts waiting to be garnished.

Combine the lemon zest with chopped fresh dill and green onions, then scatter this bright, aromatic mixture over the salmon so the zesty yellow, feathery green dill and pale green onion rings contrast with the golden fish and creamy sauce. Serve the skillet straight on the painted white pine surface, letting the steam-warmed cream and herb-tossed salmon speak for themselves.