Mix the creamy base
In a bowl, whisk together your Greek yogurt, mascarpone, milk, vanilla, and sweetener until smooth. Add the coffee powder and cocoa powder, and mix until everything is evenly combined. It should look like slightly thick, dreamy coffee cream.
Add the oats
Stir in the rolled oats until they’re fully coated. Don’t worry—they’ll soak up the flavor overnight.
Layer it (optional, but fancy)
If you want that classic tiramisu look, layer the oats mixture in a jar or cup, then sprinkle a little cocoa powder in between layers. Repeat until you reach the top. Or just dump it all in a jar—who’s judging?
Chill overnight
Cover the jar or bowl and pop it in the fridge. Give it at least 6 hours, though overnight is ideal. The oats will soften and the flavors will meld into something magical.
Add toppings before serving
Right before eating, sprinkle cocoa powder, chocolate shavings, or berries on top. Optional: a few chopped nuts if you like a little crunch.