Mushroom Uttapam is a delicious and earthy variation of the traditional Uttapam. It is made by adding sautéed mushrooms to the fermented rice and lentil batter. The batter is made by soaking rice and lentils overnight, grinding them into a smooth paste, and then fermenting it for a few hours. The fermented batter is then spread on a hot griddle and topped with the sautéed mushrooms. Cook until the Uttapam is crispy and golden brown. Serve this flavorful Mushroom Uttapam with coconut chutney or tomato chutney for a satisfying and hearty meal.