Season salmon fillets with salt and pepper. In a large non stick pan on medium heat, sear salmon fillets in 1 tsp of olive oil - about 2-3 minutes on each side. Remove salmon and set aside.
In the same skillet, add the remaining 3 tsp of olive oil, saute onion, garlic, sundried tomatoes, paprika, red chili pepper flakes and dried basil for 1 minute until garlic is fragrant
Add vegetable stock to deglaze the skillet and bring to a gentle simmer. Add half and half to the skillet and stir until a creamy sauce forms. Adjust seasoning with salt and pepper. If you want it thicker, make a cornstarch and water slurry and add it to simmering sauce until it is thickened to your liking.
Add salmon back to the skillet and reheat for a few minutes. Sprinkle with fresh basil and serve over pasta, rice or other grain.