Heat broth and pumpkin on low. Keep warm throughout the process.
Add 1 tablespoon vegetable broth to skillet, and stir in the shallots. Cook 1 minute. Add rice, stirring to coat, about 2 minutes. When the rice has taken on a pale, golden color, pour in wine, stirring constantly until the wine is fully absorbed.
Add ½ cup broth to the rice, and stir until the broth is absorbed. Continue adding broth ½ cup at a time, stirring continuously, until the liquid is absorbed and the rice is al dente, about 15 to 20 minutes.
In a separate pan cook the mushrooms and sage. Sauté the mushrooms and sage using a bit of the vegetable broth mixture for about 5 minutes, until the mushrooms are soft.
Remove the rice from heat, and stir in mushrooms. Taste and season with salt and pepper.
Spoon into bowls, top with additional sage, and enjoy.