Preheat the oven to 200 degrees Celsius.

Grease (or line with baking paper) a 30 x 20 cm cake pan.

Whip together the eggs and sugar until foamy and white.

Mix the flour and baking powder.

Add the flour mixture to the egg mixture.

Add milk and melted butter and blend until combined.

Pour the batter into the prepared cake pan.

Bake for 25-30 minutes, until a wooden skewer comes out clean.

10 minutes before the cake is done, mix together the melted butter, milk, brown sugar, and shredded coconut for the topping.

When the cake is done, pour over the topping.

Bake for another 10 minutes.

Take out of the oven - the topping will still be slightly runny, but will firm up as it cools.

Leave to cool for an hour or so before serving.