This Festive Vegan Seitan Wellington is a show-stopping centerpiece for any holiday feast. Made with homemade seitan, a savory mushroom and vegetable filling, and wrapped in flaky puff pastry, this vegan Wellington is sure to impress. The seitan is seasoned with herbs and spices, giving it a deliciously meaty flavor and texture. Serve it with a rich mushroom gravy and roasted vegetables for a complete and satisfying meal.