Melt white chocolate and butter in the microwave heating 30 seconds at a time then stirring until completed melted, then add the sugar and stir
Add in the eggs and vanilla and beat them into the batter.
Fold in the flour and salt to the mixture.
Sprinkle in the chopped dark Toblerone
Stir the batter well, but do not over mix as you don't want to work the gluten into the blondie.
Pour into a greased and lined tin.
Bake in the oven at 170c (Fan assisted) for about 30 minutes.
Allow to cool then slice into 16 pieces and enjoy!