Pre-heat the oven to 180ºC/350°F/Gas 4.
Into the stand mixer bowl, add the flour, granulated sugar, low fat spread. Mix until it is all combined.
Add the eggs one at a time, make sure the egg are mixed into the cake mixture thourghly before adding the next. Add the vanilla extract.
Line the cake tin with baking parchment. Sprinkle the caster sugar over the bottom of the lined cake tin. Place the pineapple rings and half a cherry into the centre of the rings. Make sure you put the cherries with the cut side facint up.
Pour over the cake mixture carefully and make sure all of the pineapple is covered.
Cook for 25 - 30 minutes or until the top of the cake is golden brown. If you pop a skewer into the centre, it should come out clean.
Once cooked, leave the cake to stand for 5 minutes.
After the cake has been left to cool for 5 minutes, remove the cake from the cake tin and place onto a wire rack.
Cut into 12 slices and enjoy.