This vegan mushroom Wellington recipe is a twist on the classic beef Wellington, perfect for vegetarian or vegan guests during holiday gatherings. The filling is made with a blend of mushrooms, sweet potatoes, and spices like caraway, nutmeg, and cinnamon. The mushrooms are sautéed with onion and garlic, and then mixed with pecan nuts and sweet potatoes. The mixture is wrapped in puff pastry and baked until golden. Serve with side dishes like mashed potatoes, roasted vegetables, or a fresh salad. This Wellington can be prepared in advance and frozen if needed.