Add oats, chia seeds, flaxseed meal, acai berry powder, and honey to a mason jar.
Now mix everything and then add milk to the jar. Mix the oats well again.
Cover the jar and place it in the refrigerator overnight. You can also keep it for a shorter duration if you are making the oats for some other time of the day. A minimum of 2 hours is recommended for a good taste!
Once the oats are cool enough, top them with nuts, berries, or fruits and serve!