Place each type of chocolate in a thin-sided bowl and suspend over a gently simmering bain-marie, ensuring that the bowl does not touch the water. Melt the chocolate and stir until smooth, allow to cool slightly. Using a rubber spatula, carefully fold one third of the whipped cream into each bowl.
Using the whisk on a hand mixer, beat the ricotta, icing sugar and cinnamon until the mixture turns creamy. Carefully mix one third of the mixture into each of the bowls of chocolate.
Pour the Toblerone mixtures (milk, white, dark) into the dish one after the other, cover and chill for approx. 2 hrs. Shape the mixture into balls using an ice cream scoop, plate up, sprinkle with the chocolate shavings.