Caramel Slice

Bahan-bahan (12 porsi)

• 1 cup flour, (plain/all purpose)
• 1/2 cup brown sugar (, loosely packed)
• 1/2 cup desiccated coconut ((US: sweetened finely shredded coconut, Note 1))
• 125 g / 4.5oz unsalted butter (, melted)
• 125 g / 4.5oz unsalted butter (, roughly chopped)
• 1/2 cup (80g) brown sugar (, loosely packed)
• 1 tsp vanilla extract ((or essence))
• 395 g / 14oz sweetened condensed milk ((1 can, 300ml) (Note 1b))
• 200 g / 7oz dark or milk melting chocolate ((US: semi-sweet chocolate chips))
• 1 tbsp vegetable oil