Add the rice, almond milk, raisins, 2 tablespoons of chia seeds and cinnamon stick in the slow cooker.
Cover and cook on low 3 to 4 hours or high for 1-1/2 to 2 hours, or until rice is tender.
If using unsweetened almond milk, add either 1/2 cup coconut sugar, honey, or maple syrup (more or less to taste) before removing from slow cooker. Sprinkle the remaining chia seeds before serving.