Bring a large pot of salted water to a boil. Add the fettuccine pasta and cook according to package instructions until al dente. Drain and set aside.
In a large skillet, melt the butter over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant but not browned.
Stir in the pumpkin puree and heavy cream, mixing until well combined and smooth.
Add the grated Parmesan cheese, nutmeg, cinnamon, salt, and pepper. Stir continuously until the cheese melts and the sauce is creamy.
Toss the cooked fettuccine in the pumpkin Alfredo sauce until well coated. If the sauce is too thick, you can add a splash of pasta water to reach your desired consistency.
Serve hot, garnished with fresh parsley and an extra sprinkle of Parmesan if desired.
Notes
Add more spices to taste or adjust the consistency with pasta water.
Keyword alfredo, creamy, fall recipe, pasta, pumpkin