Melt the butter and cream together in a pan over very low heat. Remove from the heat. Add the chocolate and stir until just combined, then stir in the Amaretto to form a smooth and shiny ganache.
Butter two 8 x 12 cm silicone loaf moulds (or use one larger mould).
Divide ⅓ of the ganache between the two pans. Add a layer of biscuits. You may need to break the biscuits to fit (I managed 2 ½ biscuits on each layer. Cover with half of the cherries and walnuts. Add another ⅓ of the ganache, followed by the rest of the biscuits. Cover with the ganache and top with the remaining walnuts and cherries.
Leave in a cool place to set. Should be ready in 2-3 hours.
Please note: calories are per serving. They’re approximate and will depend on exact ingredients used.