help incorporating weed/hash into chocolate tiffin

hey all, i need some help.. i like making chocolate tiffin, which is bassicle melted butter and honey mixed with crushed biscuits and melted chocolate, then cohocolate on top which all hardens in the fridge..

i really want to try get a way to put hash or weed into it because it would just be so amazing..

heres the recipe:

Ingredients

Serves: 20

• 110g (4 oz) buttter
• 2 tablespoons sugar
• 2 tablespoons golden syrup
• 4 teaspoons cocoa
• 225g (8 oz) Rich Tea biscuits, crushed
• 225g (8 oz) cooking chocolate - half milk & half dark Preparation method
  
  Prep: 10 mins | Cook: 5 mins | Extra time: 1 hour, setting 1.
  In a saucepan, melt the butter, sugar, syrup and cocoa. Add the biscuits and raisins when melted. Stir to combine.
  
  2.
  Pour mixture into a swiss roll size tin and press down. Melt the cooking chocolate and pour over the mixture in the tin.
  
  3.
  Pop the tin into the fridge and leave for about 1 hour to set. To serve, cut into about 20 pieces.

will thethc be affected because it has to be set in the fridge for over an hour?

plus how do i put the weed or hash into it? while melting the butter or :S...

would apreciate the help and tips/opinions

 

very good idea !!