Add the Muesli and yogurt to the bowl and stir everything together. The mixture should be quite wet. As it sits in the refrigerator overnight, it will soak up all of the liquid. If the mixture looks too dry, add a touch more juice.
Cover and transfer to the refrigerator overnight. The mixture will keep for several days in the refrigerator.
Note: Feel free to add other ingredients to this mix either before soaking (for a softer texture) or after soaking (for a crunchier texture).
Dried fruit, chopped nuts and/or seeds can be incorporated.
Instead of using yogurt, you can also use cream, whipped cream, condensed milk or even cottage cheese. For a little extra sweetness, a touch of honey can be added.
Grated or chopped fresh fruit, such as bananas, fresh berries, grapes, etc. can also be added just before serving.