Prepare the Salmon: Begin by patting the salmon fillets dry with a paper towel. Generously season both sides with sea salt and freshly cracked black pepper to enhance the flavor.
Sear the Salmon: In a large, non-stick skillet, heat the extra virgin olive oil over medium-high heat. When the oil is shimmering but not smoking, carefully add the salmon fillets, placing them skin-side down. Sear for about 4-5 minutes on each side, or until the salmon is thoroughly cooked and exhibits a beautiful golden-brown crust. Once cooked, remove the salmon from the skillet and place it on a warm plate to keep it cozy.
Sauté the Garlic and Tomatoes: Without cleaning the skillet, reduce the heat to medium. Add the finely minced garlic, sautéing for approximately 1 minute until it becomes fragrant, but be cautious not to let it burn. Now, incorporate the halved cherry tomatoes and continue cooking for another 2-3 minutes, allowing them to soften and release their juices.
Add Spinach: Gently stir in the fresh baby spinach leaves. Cook for about 1-2 minutes or just until the spinach is wilted and bright green.
Make the Creamy Sauce: Lower the heat and pour in the heavy whipping cream. Add the freshly grated Parmesan cheese and sprinkle in the Italian seasoning. Stir continuously until the cheese melts and the sauce becomes velvety and creamy.
Combine Ingredients: Squeeze the juice of the fresh lemon into the sauce, mixing well to combine all the flavors. Next, gently return the seared salmon fillets back into the skillet, spooning the creamy sauce over each piece to thoroughly coat them.
Simmer Together: Allow the dish to simmer for an additional 2-3 minutes, letting the flavors meld beautifully.
Serve: To present, place the salmon fillets on each plate, drenching them in the luscious creamy sauce. Garnish generously with fresh basil leaves for a pop of color and aroma.