Rotisserie Rum Glazed Pineapple

Name: Rotisserie Rum Glazed Pineapple
Ingredients: 2 pineapples, peeled with tops left on; 450g brown sugar; 300ml spiced vanilla rum; ½ fresh pineapple, peeled and roughly chopped into chunks then frozen overnight (or 250g frozen pineapple chunks); 200ml fresh pineapple juice; 4 tbsp good-quality coconut cream; 200ml good-quality white rum; Ice