Bring a large pot of salted water to a boil. Cook pasta as directed. Strain and set aside.
In a large skillet, warm the oil over medium heat. Add the onion and garlic then cook for about 3 minutes, until onion is translucent. Then add the spinach and cook until wilted.
To the skillet, add the crushed tomatoes and seasoning (oregano, basil, salt & pepper). Reduce heat to a simmer. Add the cream cheese and stir until melted and evenly combined.
Strain the pasta, add it back to the pot then pour the sauce over top. Stir until evenly coated. Serve warm with cashew parmesan and fresh basil (optional), and enjoy!