Bring a large pot of salted water to a boil. Cook your ravioli according to the package directions. Strain them, and toss them with a little olive oil to prevent sticking. Set aside, if needed.
While the water/ravioli are cooking, prepare the pumpkin alfredo sauce.
Start by adding the flour, broth, and milk to a mixing bowl. Whisk them together until evenly combined.
Heat a large sauce pan over medium heat, add the butter. Once melted, add the garlic and let it simmer for roughly 30 seconds. Just until fragrant, but not burnt.
Stir in the milk broth mixture, whisking until evenly combined. Then stir in the pumpkin, cheese, herbs, and spices until incorporated.
Bring the mixture to a simmer, and let it continue cooking (stirring occasionally) until thickened- roughly 10-15 minutes.
Add the ravioli to the skillet, gently stirring to incorporate.
Ladle the ravioli onto plates to serve, and top them with the toasted pine nuts and pecans- if using.