Meanwhile cook the pasta according to the directions on the package.
Immediately toss the drained pasta with the spinach. The heat of the pasta will wilt the spinach. Stir in the sundried tomatoes (add a little oil from the jar of sundried tomatoes if the pasta seems dry) and top with parmesan cheese right before serving.
Recipe by The Krave at http://thekrave.com/pan-roasted-salmon-w-whole-wheat-penne-spinach-and-sundried-tomatoes/