Pour the milk into a saucepan and add the chopped chocolate. Gently heat the milk until the chocolate melts, being careful not to let it boil. Once the chocolate and milk have fully combined, add the agave and vanilla extract and mix well.
Spoon the greek yogurt into a large bowl and pour the chocolate mixture on top. Mix together well before transferring to individual bowls, ramekins or glasses.
Chill in the fridge for 2 hours. Serve with a small spoonful of Greek Yogrt! and some raspberries.