PREHEAT the oven to 375 F, and coat an oven-safe cooking dish with nonstick spray.
ROUGHLY chop the sundried tomatoes. Add the oil and the sundried tomatoes to a skillet over medium heat. Cooking for 1 minute, stirring occasionally or until fragrant. Add the baby spinach and chopped basil leaves to the skillet. It’s ok if the skillet appears very full, the leaves will cook down quickly. Stir occasionally until the leaves have fully wilted, about 3 minutes.
REMOVE from heat and add the feta cheese. Mix until well combined with the other ingredients.
PLACE salmon fillet on a cutting board. Use a sharp knife to carefully slice the salmon horizontally through the center, just until the knife almost reaches the other side.
SPOON stuffing into the center of the fillets.
Carefully transfer the salmon to the baking dish. Sprinkle with salt and pepper.
BAKE salmon on the center rack of the oven for 20-30 minutes. If the fillets started out thinner than 1 inch, it should take 20-25 minutes.
Serving Size 4oz
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.