Preheat oven to 400

Core and peel a pineapple, cut into 1 inch cubes

Coat cubes with sugar and cinnamon and place them on a cookie sheet

Roast until the pineapple is caramelized and lightly burnt on the outside (depending on fruit ripeness, time may vary but about 30-40 minutes)

Run the caramelized cubes through a juice extractor