Wash strawberries. Halve two and set aside, puree the rest. Set aside 8 tablespoon puree. Chop the chocolate bars into small pieces.
Mix the mascarpone and yoghurt and season with lemon juice and sweetener. Divide the mixture, stir in the strawberry puree under one half and the chopped chocolate under the other.
In 4 bowls, first layer stracciatella cream, then strawberry cream and then strawberry puree, decorate with desiccated coconut and the halved strawberries.