Preheat oven to 180 degree C. Grease 6 muffin tray with butter or oil. Add few butter cubes in along with some brown sugar and pop it in oven to melt for just 3 to 4 mins.
Remove it from oven, and place a pineapple slice and a cherry in each one and set aside.
Now make the batter. Take sugar, eggs, melted butter and vanilla. Give a good mix.
Add in flour, baking powder and salt and mix well. Add in the pineapple syrup and mix well so it gets into a smooth batter.
Now use a icecream scoop to scoop the batter and fill each cupcake cases over pineapple.
Pop this in oven and bake for 25 to 30 mins.
Remove it from oven and cook it down for just 5 mins. Run a knife around the sides and invert it.