Break some of the pretzels up and place on a lined baking sheet so there's not too many gaps.
Combine butter and sugar on high heat stirring continuously.
Once it starts to boile, I leave it on a rolling boil for 3-4 minutes but if you have a thermometer you want it 130-155C
Pour the hot caramel over the crackers and spread evenly.
Place into a 180c oven for 6-8 minutes until The caramel starts to bubble.
Pull it out and top with the chocolate chopped.
Leave it to melt for 2 minutes then spread.
Spread some salt over the top
Top with whatever you want.
