In a mixing bowl, add the almond butter, honey vanilla Greek yogurt, and chocolate almond milk. Stir until smooth and fully combined.
Next, add the old-fashioned oats, Dutch process cocoa powder, salt, and vanilla extract (if using). Mix well until all ingredients are evenly distributed.
If you prefer a sweeter taste, drizzle in the maple syrup or honey and stir again to incorporate.
Transfer the mixture into your jar or container. Cover it tightly and place it in the refrigerator overnight, or for at least 4 hours, to let the oats soak up the flavors.
In the morning, give your oats a good stir. Add your favorite toppings, such as sliced bananas, chopped almonds, or a sprinkle of cocoa powder, and enjoy your delicious Chocolate Almond Overnight Oats!