Meanwhile, in a large saucepan pour in the olive oil and heat over medium heat. Add in the garlic and cook for 1-2 minutes, stirring often. Add in the pumpkin puree, tomato paste, and broth and bring to a simmer, stir until combined. Reduce heat to low and add in the cream, balsamic vinegar, nutmeg, and salt and pepper, stir and let simmer while pasta cooks.