Follow these simple steps to create The BEST Tiramisu Overnight Oats:

1. Combine Oats and Liquid: In a bowl, mix together the rolled oats and milk. Stir well to combine.
2. Mix Coffee and Sweetener: In another bowl, combine the cooled espresso or coffee, honey or maple syrup, and vanilla extract. Mix until well blended.
3. Prepare Yogurt Mixture: In a separate bowl, combine the Greek yogurt (or mascarpone) with cocoa powder and a pinch of salt. Whisk until smooth.
4. Layer Ingredients: In a mason jar or bowl, layer half of the oat mixture, half of the coffee mixture, and half of the yogurt mixture.
5. Repeat Layers: Continue with the remaining oat mixture, coffee mixture, and yogurt mixture to create additional layers.
6. Chill: Seal the jar or cover the bowl, and refrigerate for at least 4 hours, preferably overnight. This step allows the flavors to meld and the oats to soften.
7. Garnish Before Serving: When ready to serve, sprinkle with dark chocolate shavings or additional cocoa powder for a finishing touch.

These straightforward steps will guide you in creating this amazing dish without any hassle.