1-Step 1: Get the oven and baking dish ready. Start by preheating your oven to 350 degrees Fahrenheit. Then grease a 3-quart baking dish so the casserole slides out easier after baking. This small step saves you from scrubbing later, which is always a win in my book. If you are making the dish ahead, you can stop here and prep the rest when you are ready to bake.

2-Step 2: Mix the pineapple filling. In a large bowl, combine the drained pineapple chunks, the reserved 2 tablespoons of pineapple juice, sugar, and flour. Toss everything together until the pineapple is coated. The flour helps thicken the filling, while the reserved juice keeps the mixture moist and flavorful. If you like a richer taste, brown sugar works nicely here too.

3-Step 3: Add the cheese. Stir in the shredded cheddar cheese until the pineapple mixture is well combined. This is the moment when the recipe starts to feel like real Southern magic. The sweet fruit and sharp cheese may sound surprising, but they work together in a way that just makes sense once you taste it.

4-Step 4: Transfer to the baking dish. Spoon the pineapple mixture into the prepared dish and spread it out evenly. Try to keep the top level so the casserole bakes at the same pace all the way across. If you are serving a crowd, this is a good point to check that the casserole fits comfortably in your dish without overflowing.

5-Step 5: Make the buttery cracker topping. In a separate bowl, mix the crushed buttery crackers, melted butter, cinnamon, and nutmeg. Stir until the mixture looks like wet sand. That texture is exactly what you want because it helps the topping bake into a crisp, golden layer instead of staying dry and dusty.

6-Step 6: Add the topping and bake. Sprinkle the crumb mixture evenly over the pineapple filling. Place the dish in the oven and bake for 25 to 30 minutes, or until the top is golden brown and bubbling around the edges. If your oven runs hot, start checking around the 25-minute mark so the topping does not brown too quickly.

7-Step 7: Let it rest before serving. When the casserole comes out of the oven, let it rest for 5 minutes before serving. That short wait helps the filling settle a little, so each scoop holds together better. It also keeps the dish from being lava-hot when it lands on the table, which everybody appreciates.