Preheat your oven to 375°F (190°C).
In a large skillet, heat olive oil over medium-high heat.
Season the salmon fillets with salt and pepper, then sear them skin-side down for 4-5 minutes.
Carefully flip the salmon fillets and cook for another 3-4 minutes until golden brown.
Remove the salmon from the skillet and set aside on a plate.
In the same skillet, add garlic and cook for 1 minute until fragrant.
Stir in sun-dried tomatoes and red pepper flakes, sautéing for another 2-3 minutes.
Pour in the heavy cream, stirring to combine all ingredients before bringing it to a simmer.
Add the spinach and stir until wilted, about 2-3 minutes.
Return the salmon to the skillet, spooning sauce over the top.
Garnish with fresh basil before serving.