Preheat the oven to 350°F (175°C).
Select a 8.5 in x 4.5 in x 2.5 in (or 9 in x 5 in x 2.5) baking dish. Combine the uncooked gluten-free pasta, vegetable broth, marinara sauce, pumpkin or sweet potato puree, and garlic & herb seasoning within the prepared baking dish. Thoroughly mix the ingredients together in the pan to ensure even distribution.
Evenly distribute the shredded mozzarella cheese over the pasta mixture, creating a uniform topping.
Bake covered for 30-45 minutes, or until the pasta is fully cooked and the cheese is melted.
During the final 10-15 minutes of baking, remove the cover and monitor the dish closely to prevent excessive browning or burning on the cheese. The pasta is considered fully cooked when it can be easily pierced with a fork.
Remove the baked pasta from the oven and allow it to rest for approximately 5 minutes before serving.