Heat the oven to 180 degrees.
Put the 100g of butter in a room temperature and set a said.
In a mixing bowl along, using an electric whisk beat the 50g butter and 50g of brown sugar together until creamy, spread the mix over the base of a baking tray and arranges the pineapple rings on a top.
In a clean mixing bowl, add the soft butter, golden caster sugar, self-raising flour, baking powder, vanilla past, eggs and mix with an electric whisk until a soft consistency.
Spoon into the baking tray on top of the pineapple and smooth it out so it's level.
Bake for 35 mins.
Leave to stand for 5 mins and then turn out onto a plate. Serve warm.
«To impress dinner party guests you can create individual portions by baking in ramekins.»