01 - Preheat the oven to 400°F and prepare a baking tray by lining it with parchment paper or lightly oiling it.
02 - Arrange salmon fillets on the tray, brush with olive oil, then season with salt and freshly ground black pepper.
03 - Bake the salmon fillets for 12 to 15 minutes until just cooked through and flaky.
04 - While the salmon bakes, melt the butter in a small saucepan over medium heat. Add minced garlic and sauté for 1 minute until fragrant.
05 - Stir in heavy cream, lemon zest, lemon juice, and Dijon mustard. Simmer gently for 2 to 3 minutes, stirring frequently.
06 - Add chopped dill, season with salt and pepper, and cook for an additional 1 to 2 minutes until the sauce slightly thickens.
07 - Plate the baked salmon fillets and spoon the warm dill and lemon sauce over them. Garnish with lemon slices and extra fresh dill if desired.