Bring a medium-large pot of water to a boil. Cook the pasta for 7 minutes or until tender, then drain and rinse under cold water.
Meanwhile, melt the butter in a medium-small pot, then whisk in the vegetable broth and wine. Stir in the pumpkin until combined, followed by the nutritional yeast, red pepper flakes, black pepper, and salt, to taste. Gently simmer for 5 minutes, stirring occasionally.
Stir the cooked, rinsed pasta into the sauce, then cook for 2 minutes, or until hot.
Spoon the pasta into a bowl then top with the Parmesan, breadcrumbs, seeds, tomatoes, lemon, basil, black pepper, and salt. Enjoy!