1-Step 1: Preheat and prepare the baking dish Start by preheating your oven to 350°F. Lightly grease a 3-quart baking dish so the casserole will release easily after baking. A glass or ceramic dish works well because it helps the casserole heat evenly.

2-Step 2: Mix the pineapple filling In a large bowl, add the drained pineapple chunks, the reserved 2 tablespoons of juice, sugar, and flour. Stir until the pineapple pieces are evenly coated. The flour helps the filling set up nicely while the juice keeps everything moist and flavorful. Next, stir in the shredded cheddar cheese. This is where the classic Southern Pineapple Casserole flavor really starts to come together. The cheese may seem unusual at first, but it melts into the pineapple mixture and creates that signature sweet and savory taste people love.

3-Step 3: Transfer to the baking dish Spoon the pineapple mixture into your prepared baking dish and spread it out evenly. Try to keep the layer level so the casserole bakes evenly from edge to center. If you are making this for a crowd, you can double-check that the dish is not too full, since the bubbling fruit needs a little room.

4-Step 4: Make the buttery cracker topping In a separate bowl, mix the crushed buttery crackers, melted butter, cinnamon, and nutmeg. Stir until the crumbs are fully coated and look like damp sand. This topping gives the Pineapple Casserole Recipe its golden crunch and warm flavor. If you want a slightly different topping, you can use other buttery crackers, but keep the same amount so the texture stays balanced. For a lighter version, use reduced-fat crackers, though the topping may brown a little faster.

5-Step 5: Add the topping and bake Sprinkle the cracker mixture evenly over the pineapple filling. Do not press it down too much. You want the topping to stay light and crisp while it bakes. Place the dish in the oven and bake for 25 to 30 minutes, or until the top is golden brown and the casserole is bubbly around the edges. The smell during baking is fantastic. You will notice the sweet pineapple, melted cheese, and warm spices blending together in a way that feels cozy and homey. That is one reason this Southern classic is such a hit at family gatherings.

6-Step 6: Rest before serving Take the casserole out of the oven and let it rest for 5 minutes before serving. This short rest time helps the filling settle a little, so it is easier to scoop neat portions. Serve warm for the best flavor and texture.