Pre heat the oven at 200 °C

Melt butter in a pan and continue to cook until it's slightly golden

Mix the butter with lemon juice, lemon skin and oregano, set aside

To prepare the salmon filets, first dry them patting them with paper towels, and then sprinkle them with salt and pepper to taste.

On an oven tray, put a sheet of aluminum foil big enough to fit the filets, the and roll the sides. Put both salmon pieces and pour the sauce over them, making sure some bits of lemon and oregano remain on top of the filets

Put everything into the oven for 15 minutes. Serve immediately