Twix Cake Ingredients For the cake: 90g (about 3/4 cup) plain flour (all-purpose) 1 tsp baking powder 1/8 tsp salt 60ml (1/4 cup) milk 1/2 teaspoon vanilla extract 60g (1/4 cup) sugar (preferably caster/superfine) 60g (1/2 stick) unsalted butter, softened 1 medium egg For the caramel: 1 cup heavy cream (use pure/pouring cream in