1. 1. Preheat the oven to 375°F (190°C).

2. 2. Wash and scrub the baking potatoes. Pierce each potato with a fork a few times.

3. 3. Place the potatoes on a baking sheet and bake for 45-60 minutes, or until they are tender when pierced with a fork.

4. 4. In a large pot, cook the spaghetti according to package instructions. Drain and set aside.

5. 5. In a separate saucepan, combine the condensed cream of chicken soup, alfredo sauce, and marinara sauce. Heat over medium heat until heated through, stirring occasionally.

6. 6. Add the cooked spaghetti to the saucepan and mix well to coat the pasta in the creamy sauce.

7. 7. Stir in the spinach and cook until wilted, about 3-5 minutes.

8. 8. Once the potatoes are baked, cut them open and fluff the insides with a fork. Serve the creamy pasta mixture over the baked potatoes.

9. 9. Enjoy your creamy baked potato pasta!