Lamington Slice | Donna Hay

Ingredients

• 125g unsalted butter, softened
• ¾ cup caster (superfine) sugar
• 1 teaspoon vanilla extract
• 2 eggs
• 1¼ cups plain (all-purpose) flour, sifted
• 1¼ teaspoons baking powder, sifted
• ½ cup (125ml) milk
• 1 cup (75g) shredded coconut
• ¾ cup icing (confectioner’s) sugar
• 2 tablespoons cocoa powder
• ⅓ cup (80ml) boiling water
• 20g unsalted butter, melted