Chili & honey grilled pineapple
Sweet potato gratin though, maybe this is the casserole that was voted down?
Edited to add that I saw a recipe for stir-fried pineapple with ginger that sounded interesting. It's made with garlic, shallots, fresh ginger, soy sauce, lime juice and a fresh red chile. I can't find link but if you're interested, I can paraphrase the recipe. It's from a book called Thai Food and Cooking