Creamy Garlic Butter Salmon

INGREDIENTS 4 salmon fillets, skin off (or Trout or any white fish) Salt and pepper, to season 2 teaspoons olive oil 2 tablespoons butter 6 cloves garlic, finely diced 1 small yellow onion, diced 1/3 cup dry white wine (OPTIONAL) -- (do not use a sweet white wine) 5 ounces (150 g) jarred sun dried tomato strips in oil, drained of oil 1 3/4 cups half and half *SEE NOTES Salt and pepper, to taste 3 cups baby spinach leaves 1/2 cup fresh grated Parmesan cheese, (do not include for dairy free option) 1 teaspoon cornstarch (cornflour) mixed with 1 tablespoons of water (optional)** 1 tablespoon fresh parsley chopped INSTRUCTIONS Heat the oil in a large skillet over medium-high heat. Season the salmon filets (or fish if using) on both sides with salt and pepper, and sear in the