1-First step: Get everything ready Start by preheating your oven to 350°F. Lightly grease a 9×13-inch baking dish so the casserole does not stick. Drain the canned pineapple chunks well, then reserve 2 tablespoons of juice from the can. This little bit of juice helps bring the filling together without making it too wet. Next, crush the crackers in a bowl or zip-top bag until you have small pieces, not dust. If you want a softer topping, crush them more finely. If you like extra crunch, leave a few larger pieces. Gather the sugar, flour, cheddar cheese, melted butter, cinnamon, and nutmeg before you begin mixing.

2-Second step: Make the pineapple filling In a large mixing bowl, combine the drained pineapple chunks, sugar or brown sugar, flour, cheddar cheese, cinnamon, nutmeg, and the reserved 2 tablespoons of pineapple juice. Stir until everything is evenly mixed and the flour is fully coated by the fruit and sugar mixture. The flour helps thicken the filling as it bakes, while the cheese melts into the pineapple for that classic southern pineapple casserole taste. If you prefer a slightly sweeter version, use brown sugar. If you want a cleaner, brighter flavor, stick with granulated sugar. Both work well in this easy pineapple casserole recipe.

3-Third step: Spread the filling in the dish Pour the pineapple mixture into the prepared baking dish and spread it out evenly with a spoon or spatula. Try to keep the layer level so it bakes evenly from edge to center. The mixture should look chunky and thick, not soupy. If the pineapple seems very juicy, let it drain a little longer before mixing. That small step can make a big difference in the final texture. A well-drained filling gives you a firmer casserole that slices better after baking.

4-Fourth step: Make the cracker topping In a separate bowl, mix the crushed crackers with the melted butter until all the crumbs are coated. This is the part that gives the casserole its golden top. Sprinkle the buttery cracker mixture evenly over the pineapple filling. For extra flavor, some home cooks like to add a pinch more cinnamon to the topping. You can also mix in a little extra cheddar if you want a cheesier crust. Either way, the topping should cover the filling fully so it bakes into a crisp layer.

5-Fifth step: Bake until bubbly and golden Place the casserole in the preheated oven and bake for about 30 to 35 minutes. The filling should be hot and bubbling around the edges, and the cracker topping should turn golden brown. If the top browns too quickly, cover it loosely with foil for the last few minutes. The cheese will melt into the pineapple filling and create a gooey texture that is both sweet and savory. That is part of what makes this pineapple casserole recipe such a favorite at Southern tables.

6-Final step: Rest and serve Let the casserole sit for about 10 minutes before serving. This helps it settle a bit, making it easier to scoop. Serve warm alongside ham, roasted pork, turkey, or chicken. It also works as a side for holiday brunches or potluck meals. If you want the best texture, do not skip the short resting time. It helps the casserole hold together better on the plate.