Ree's Pineapple Casserole, a Southern dish made with sweet pineapple, sharp cheddar cheese, and a buttery cracker topping, is a classic Southern dish known for its unique sweet-and-savory flavor combination. The combination of the pineapple and sharp cheese is what makes this dish a popular at church potlucks. The recipe can be assembled ahead of time and stored in the refrigerator. The recommended type of pineapple should be used for this recipe: canned pineapple tidbits.