Preheat the oven to 375°F (190°C).
In a skillet on a medium heat, melt the butter. Add in chopped onion and garlic, saute until fragrant, add a tablespoon of water, keep sweat the onion until they become translucent.
Stir in the Arborio rice and cook for an additional 2-3 minutes, allowing the rice to become slightly translucent at the edges.
If using white wine, pour it into the skillet and stir until most of the liquid is absorbed.
Add the pumpkin puree and stir to combine with the rice.
Begin adding the vegetable broth, one cup at a time, stirring continuously. Allow the liquid to be absorbed before adding the next cup. Continue this process until the rice is creamy and cooked to your desired consistency (usually about 20-25 minutes).
Stir in the grated Parmesan cheese, ground nutmeg, and season with salt and black pepper to taste.
Place the skillet or casserole dish in the preheated oven and bake for about 10-15 minutes, or until the top becomes slightly golden and crispy.
Remove from the oven, garnish with fresh parsley, and serve your Easy Baked Pumpkin Risotto hot. Enjoy!