For a nutty and indulgent variation, try making Peanut Butter Tāngyuán using a food processor. The sticky rice flour is processed with peanut butter in the food processor until well combined. Water is gradually added to form a smooth dough. The dough is then divided, filled with a peanut butter filling, and shaped into balls. These Peanut Butter Tāngyuán can be cooked in boiling water and served in a sweet peanut butter syrup for a rich and satisfying dessert. The combination of the sticky rice balls and the creamy peanut butter filling is a match made in heaven for peanut butter lovers.