Wendy's Bacon Portabella Mushroom Melt is a delicious and indulgent sandwich made with juicy beef patty, crispy bacon, sautéed portabella mushrooms, and melted cheese. The beef patty is seasoned with salt and pepper, then grilled to perfection. The mushrooms are cooked with garlic and butter until tender and flavorful. The sandwich is assembled with the beef patty, mushrooms, bacon, and cheese, then toasted until the cheese is melted and gooey. It's a mouthwatering treat for burger lovers.