Bring a large pot of salted water to a boil and cook pasta according to package directions for al dente texture, approximately 8-10 minutes. Reserve one cup of pasta water before draining, as it helps adjust sauce consistency later. This starchy water is essential for achieving the perfect velvety coating.

While pasta cooks, heat olive oil and butter in a large skillet over medium heat. Add minced garlic and sauté for one minute until fragrant, being careful not to brown it. This aromatic base builds flavor foundation for your pumpkin pasta recipe.

Stir in pumpkin puree, vegetable broth, heavy cream, sage, nutmeg, salt, pepper, and red pepper flakes. Whisk everything together thoroughly and simmer for 5-7 minutes until the sauce thickens slightly and flavors meld. The creamy pasta sauce should coat the back of a spoon.

Remove from heat and stir in grated parmesan cheese until completely melted and smooth. Taste and adjust seasonings—add more salt if needed or extra nutmeg for deeper autumn warmth. It should taste rich and balanced, neither too sweet nor too savory.

Add drained pasta to the skillet and toss gently to coat every strand with the velvety sauce. If it seems too thick, add reserved pasta water one tablespoon at a time until reaching desired consistency. The cozy dinner should be creamy but not soupy.

Divide among bowls and top generously with toasted pine nuts and fresh parsley. Drizzle with extra olive oil if desired for additional richness and visual appeal. Serve immediately while the sauce clings beautifully to every bite.