Add the broth to a saucepan and heat to a rapid simmer, then reduce the heat slightly to keep it warm.
Heat the olive oil in a large saucepan over medium heat, and sauté shallots until fragrant.
Add in the rice and sauté about 5 minutes, until translucent. Add in the wine and stir until absorbed.
Add the broth, one cup at a time, stirring occasionally until the liquid is absorbed (if it starts to boil too rapidly, reduce the heat to maintain a gentle simmer). Stir in the pumpkin, rosemary, and salt with the last cup of broth, and cook until creamy and the liquid is absorbed.
Stir in nutritional yeast/parmesan, salt, and pepper, to taste. Garnish with fresh rosemary, and serve.