A Lithuanian Chocolate Fridge Cake (a.k.a. Tinginys) is nothing short of delicious! Chocolate, condensed milk and lots of crumbly biscuits make an easy effortless dessert that requires no baking and can be then kept in the fridge for up to a week!
Break the biscuits into rough pieces and set them aside for later.
In a large pan, add butter, condensed milk, chocolate and cocoa powder. Put it on low heat and, stirring continuously, warm until everything has melted and you have a smooth combined mixture.
Once the mixture starts bubbling around the edges, stir it for 1-2 minutes, allowing it to thicken slightly. Take it off the heat and mix in all the crushed biscuits. Don't worry if some of them turn into mush when mixing, just make sure all the biscuits are covered in the chocolate mixture.
Line a large flat-bottomed tin with baking parchment. Tip the cake mixture into it and press down firmly, so there are no air pockets. Place another piece of baking parchment on top and weigh the cake down with something heavy, like another tin with some tins stacked on top.
Place the chocolate cake in the fridge and chill for 6 hours before slicing it into pieces.