Preheat the oven to 400 ℉. Make sure to wash and pat dry the salmon fillets
Using a cast iron porcelain pan or regular cast iron pan, lightly grease the bottom of the pan with olive oil, then arrange the 3 salmon fillets into the pan.
Then place the tomatoes around the sides of the pan lining the salmon. In a small bowl, add the butter and place into the microwave.
Using the melt function, melt the butter just until a liquid is formed.
Next, remove the butter from the microwave and add the seasonings:salt, garlic powder, Italian seasoning, thyme, and minced garlic. Stir this well.
Then, pour the mixture over the tomatoes and salmon.
Lastly, gently sprinkle the Parmesan cheese over the salmon and tomatoes.
Bake uncovered for 8-12 minute until an internal temperature of 145 ℉ has been met.
Then, broil the salmon dish for 3 minutes.