In a large skillet, melt butter over medium heat and sauté garlic for 1-2 minutes.
Add chicken broth, heavy cream, pumpkin, and pasta to the pot and stir to combine. Increase heat to medium-high until it starts to simmer. Stir again and reduce heat to medium-low. Cover and cook for 12-15 minutes, or until pasta is tender.
Remove from heat and stir in parmesan cheese. Adjust amount of cheese, salt, pepper and nutmeg as needed.