This is ridiculous, but I am not completely ashamed because it is a success every time. And I thought with the holiday work party potluck season descending upon us all, why not share a little secret? I have brought this to every work potluck since I have had a grownup job. And people think it is the shit. It has the added benefit of sounding dang-nasty ("pineapple and cheeeeeese? ewwwww!") which keeps people off it long enough for you to grab a bite, but STFU, haters, because you are about to get served, literally and figuratively. It's so good that I don't even have a picture of it from after it was done cooking. It all got eaten INSTANTLY.
OK, get 2 20-ounce cans of pineapple chunks in juice (not in syrup, because, really?), and drain them, saving about 1/4 cup of the juice. Mix this 1/4 cup juice with 3/4 cup sugar and 1/4 cup flour. Add your pineapple chunks and a package of preshredded sharp cheddar cheese, which is probably about 1 1/2 cups worth. Mix it well and tuck it into a baking dish. Melt a stick of butter and mix it with 1 cup of Ritz cracker crumbs (for real). Spread that on top of your pineapple-cheese mixture. Bake at 350 for 25-30 minutes. And by the way, this is a SIDE DISH, not dessert. It reaches across the aisle and holds hands with dessert in the spirit of bipartisanship, but it itself is emphatically NOT dessert.
UPDATE! I broke down and made it again for a brunch potluck at Melanie's house, so I took a picture after it came out of the oven. Then I realized something--it pretty much looks exactly the same before and after baking. See?