Portobello mushroom enchiladas are a savory and satisfying vegetarian dish. The filling is made with sautéed portobello mushrooms, onions, garlic, and spices like thyme and oregano. The enchiladas are then topped with a tangy tomatillo sauce and cheese, and baked until the cheese is melted and bubbly. Serve them with a side of refried beans and a sprinkle of chopped fresh cilantro for a flavorful meal.