Begin by adding rolled oats to a mixing container, ensuring they are spread evenly across the bottom.

Pour in most of your chosen milk, leaving a small amount aside for any adjustments later. Stir gently to combine.

Spoon in the pistachio butter, mixing thoroughly until smooth and evenly distributed.

Add yogurt, your sweetener of choice, vanilla extract, and a pinch of salt. Stir until smoothly combined.

If the mixture is too thick for your liking, gently fold in the reserved milk until you reach your desired consistency.

Cover the container with a lid or plastic wrap and refrigerate for at least six hours or overnight.

Before serving, give the mixture a good stir and add more milk if needed. Top with your favorite fruits, nuts, or seeds.