Preheat oven to 375. Coat an oven safe dish with oil

Make the filling
Use a paper towel to dab some oil of the tomatoes
Chop the tomatoes
Add oil and tomatoes to a pan over med. heat.
Cook 1 min, stir occasionally

Add basil and spinach to the skillet
About 3 min. Stir occasionally
Remove from heating unit and add the feta cheese stir well

Slice salmon through center
Stuff salmon
Sprinkle with salt & pepper
Bake center rack for 20-30 min.