Prep the Starch: Cook rice as usual (this can be done the day before for another meal). Refrigerate the cooked rice overnight.
Assemble the Pudding Base: In a medium bowl, whisk together the milk, Greek yogurt, chia seeds, vanilla extract, cinnamon, and sweetener.
Fold in Rice: Fold in the chilled rice. The mixture will look runny but the chia seeds will thicken it.
Chill & Thicken: Divide the mixture into two small jars or bowls. Cover and refrigerate for at least 2 hours, or until the chia seeds have fully thickened the pudding (you can also just leave them overnight again until you are ready to eat!).
Serve: Serve cold. Top with fresh berries and nuts for added fiber and crunch.