Vegan Biscoff Tiffin

• 4 digestive biscuits (make sure they're vegan-friendly)
• 250 g Biscoff biscuits (8.8oz)
• 120 g Dairy-free margarine (½ cup)
• 3 Tablespoons golden syrup (sub for agave nectar or maple syrup)
• 2 Tablespoons cocoa powder
• 150 g Dairy-free semi-sweet chocolate (5.2oz)
• 50 g Dairy-free white chocolate chips or chunks (1.7oz, optional)

For the topping:

• 150 g vegan white chocolate (5.2oz)
• 2-3 Tablespoons Melted Biscoff spread (the smooth kind)
• 1-2 Biscoff biscuits, crushed into crumbs