Use a knife to scrape away the fish scales. And use your fingers to double check whether there are any fish bones sticking out.
Cut the cherry tomatoes in half, onion into pieces and lemon into slices.
Spread the salad dressing on both sides of the salmon completely. Sprinkle some salt and pepper. Add some crushed basil leaves on the skin of the salmon.
Place parchment paper on an oven pan. Add half a portion of onions and lemon evenly on the top of parchment.
Put the salmon on it. Place the other half portion of onions and lemon on top of the salmon.
Add 1 tbsp of oil
Put another parchment on the top to prevent it from burning.
Preheat 375 degrees and bake for one hour.