Grease and line a 20cm x 20cm square baking tin with baking paper and set aside.
Break chocolate into pieces and grate for 10 seconds, Speed 8. Set aside.
Place the sweeteend condensed milk into the Thermomix bowl and heat for 5 minutes, 100 degrees, Speed 3.
Add the grated chocolate and heat for 3 minutes, 80 degrees, Speed 4.
Stir through the chopped pistachios and dried cranberries with the spatula (reserve some for sprinkling over the top).
Sprinkle over the reserved chopped pistachios and dried cranberries and press down lightly.
Place into the fridge to set for 2 hours before cutting into pieces.