Add the Oreos to a food processor (remove the filling) and grind into crumbs.
Combine the Oreo crumbs with the melted butter.
Line a rectangular baking dish with parchment paper.
Pour the Oreo mixture on the bottom and up the sides. Press an even layer.
Bake for 5-7 minutes at 180 C.
Meanwhile place the coconut milk, sugar, and vanilla in a pan. Bring to a boil and stir for 20 min.
The sauce will thicken and darken in the cooking process. Take it off the heat and add the sea salt.
Pour the caramel over the Oreo crust. Let it cool. It is gonna be the first layer.
For the second layer make the chocolate ganache.
Chop the chocolate. In a saucepan, over medium heat, heat the coconut milk.
When it is just about to boil, pour it over the chocolate. Let it stand without stirring for 5 min.
After 5 minutes, whisk to combine until the mixture is smooth.
Add the vanilla extract.
Pour the ganache over the caramel layer.
Refrigerate for 1,5-2h.