Place the chocolate on a baking sheet lined with greaseproof paper. Microwave for 60 seconds. Check if the chocolate has softened, if so, remove it from the microwave, if not microwave further 20 seconds. This will all depend on your microwave.
Spread the chocolate using a spatula or knife. It should be about 1/8 inch thick. Sprinkle the toasted nuts and the rest of the ingredients.
Keep it in a cool place to set. 
Let it cool for about an hour or until it is set.
Cut into desired shapes with a knife or pizza cutter.
Alternatively you can melt the chocolate in the oven at 120 degrees if preferred. You can also add or omit any ingredients.
