In a large mixing bowl, whisk together the unsweetened almond milk, matcha powder, maple syrup, and vanilla extract (if using) until smooth.
Stir in the chia seeds thoroughly to ensure they are well distributed in the liquid.
Cover the bowl with a lid or plastic wrap and refrigerate for at least 2 hours (or overnight) to let the pudding set.
After about 2 hours of chilling, give the pudding a quick stir to prevent the chia seeds from settling.
Before serving, give the pudding a final stir and add your favorite toppings like fresh fruit, granola, slivered almonds, or coconut flakes.
