Preheat oven to 350˚F. Grease an 8-inch square or 1 1/2 quart baking dish.
In a bowl, combine sugar and flour. Stir in pineapple and grated cheese. Toss well to combine.
Crush crackers and coat with melted butter. Evenly pour over the pineapple mixture.
Bake for about 30-45 mins at 350 until golden brown and bubbly.
A wonderful side dish for ham.