Cook the pasta according to directions.
Over medium heat, cook the olive oil and garlic in a saucepan for 2-3 minutes.
Add in the pumpkin, milk, vinegar, broth, salt, and pepper.
Whisk and let simmer for about 5 min.
Add in the sage and parmesan.
Let simmer and reduce for about 2-3 minutes.
Remove from heat, then add in the spinach.
Mix together, then add in the cooked pasta.
Top with walnuts, pepitas, extra parmesan (optional), and garnish with sage.
