Leftover Pork and Pineapple Recipe: Crispy Celery-Topped Casserole with Caramelized Sweetness

This leftover pork and pineapple recipe transforms humble leftovers into a restaurant-worthy casserole with crispy celery topping. 🌟 After years of perfecting pork dishes at The Smoky Pig, I've developed a method that balances sweet pineapple caramelization with savory pork—no waste, just flavor.

The secret lies in layering textures: tender pork, juicy pineapple, and that satisfying crunch from the celery crust.

The magic happens when you caramelize the pineapple first—its natural sugars create a glossy, sweet glaze that pairs perfectly with the savory pork. Meanwhile, the celery topping gets golden and crispy while the casserole bakes, adding a fresh, herbal contrast.

This dish proves that leftovers can be even better than the original meal, with layers of flavor that feel intentionally crafted.

What you'll end up with is a dish that's equal parts comforting and impressive—crispy on top, tender underneath, and bursting with caramelized sweetness. The pork stays juicy and flavorful, while the pineapple adds just enough tropical brightness to keep things interesting.

It's the kind of meal that turns a simple repurposing task into a culinary highlight.

Perfect for feeding a crowd or meal prepping for the week, this casserole reheats beautifully and tastes even better the next day. The technique is straightforward but delivers professional results—just like the dishes I've been perfecting for years at the pit. Let's get cooking!

Ingredients for leftover pork and pineapple

Six ingredients transform leftover pork into a crispy, caramelized masterpiece with tropical sweetness.

The pork is the heart of this dish, so choose pieces with good marbling for juiciness. Costco or your butcher's counter often have the best cuts—look for pork shoulder or loin with visible fat. Fresh pineapple is non-negotiable for that caramelized sweetness, but if you're using canned, drain it well and pat dry. The celery topping is where the magic happens: crispy and golden is the goal, so don't skip the flour coating. For the sugars, I always use a mix of brown and granulated to get that perfect caramelized crust on the pineapple—it's worth the extra minute to stir it in thoroughly.

No fresh ginger? Ground ginger at half the amount works in a pinch, though fresh has that zing. Short on celery? Substitute with finely chopped green onions or leeks—they add a similar sharpness. The soy sauce can be swapped for coconut aminos if you're avoiding soy. For the celery topping, if you're feeling fancy, add a sprinkle of toasted sesame seeds for extra crunch. The cornstarch is key for that glossy pineapple glaze—don't skip it, even if your pineapple seems juicy enough. And if you're meal prepping, double the batch—the leftovers reheat beautifully with that crispy topping still intact.

This casserole tastes even better the next day, so make it ahead if you can. Store it covered in the fridge for up to 4 days—the flavors meld beautifully overnight. For freezing, portion it into individual containers before baking, then reheat from frozen for 3-4 minutes in the microwave. The celery topping loses crispness when reheated, so I always add fresh chopped celery on top when serving. If you're serving a crowd, use a 9x13-inch baking dish—it's perfect for this recipe and makes cleanup a breeze.

Step-by-step instructions for leftover pork and pineapple casserole

Here's how to transform leftover pork into a showstopping casserole with caramelized pineapple and crispy celery topping.

In a large skillet, combine the 2 cups fresh pineapple, 0.25 cup granulated sugar, 1 tbsp cornstarch, and 2 tbsp soy sauce. Cook over medium-high heat for 5-6 minutes, stirring frequently, until the pineapple softens and the mixture begins to thicken. You'll know it's ready when the sauce turns glossy and slightly syrupy—this creates that perfect caramelized sweetness we're after.

Here's the thing—don't rush this step. The sugar needs time to break down and create those beautiful caramelized flavors. If the mixture starts to stick, add 1-2 tablespoons of water to loosen it. Once fully caramelized, remove from heat and set aside. The pineapple should be tender but still hold its shape slightly, with a glossy coating that promises sweetness in every bite.

In a separate bowl, combine the 3 cups finely chopped celery stems, 0.5 cup all-purpose flour, 1.5 tsp salt, and 0.5 tsp black pepper. Toss everything together until the celery is evenly coated. This crispy topping is what gives this casserole its signature texture contrast—crunchy on top, tender underneath.

Next, melt the 0.5 cup butter in a large oven-safe skillet over medium heat. Add the celery mixture and cook for 3-4 minutes, stirring constantly, until the edges begin to turn golden brown. You want that perfect balance of crispy and tender—just enough to hold its shape but still offer that satisfying crunch. Remove from heat and set aside with the pineapple mixture.

Preheat your oven to 375°F. In a 9x13-inch baking dish, spread the 2.5 lbs cooked pork evenly across the bottom. The pork should be in 1-inch pieces—this size ensures even cooking and maximum flavor distribution throughout the casserole.

Spread the caramelized pineapple mixture evenly over the pork. Then, sprinkle the minced 3 cloves garlic and 1 tbsp grated fresh ginger over the top. These aromatics will infuse the entire casserole with their bright, tropical flavors. Pour the 0.5 cup heavy cream evenly over the top, letting it seep down into the pork and pineapple mixture.

Sprinkle the prepared celery mixture evenly over the top of the casserole. Then, in a small bowl, mix together the 0.25 cup brown sugar and 0.25 cup granulated sugar. Sprinkle this sugar mixture evenly over the celery topping—this will caramelize during baking and create that beautiful golden crust we're aiming for.

Bake uncovered in the preheated oven for 25-30 minutes, until the celery topping is deep golden brown and the edges are bubbling. The sugar mixture should have caramelized into a glossy, sticky layer. If the topping starts to brown too quickly, tent loosely with foil for the last 5-10 minutes of baking to prevent over-browning.

Remove the casserole from the oven and let it rest for 10-15 minutes before serving. This resting period allows the juices to redistribute throughout the pork and pineapple, ensuring each bite is moist and flavorful. The celery topping will remain crispy if you serve it immediately after resting.

Here's the moment that matters: serve with a dollop of extra caramelized pineapple sauce on top if desired. Each forkful should deliver tender pork, sweet pineapple, and that perfect contrast of crispy celery topping. This casserole is the ultimate way to transform leftovers into something extraordinary—crispy, caramelized, and packed with tropical flavors.

Best sauces and condiments for this dish

Sweet & Tangy Glaze

Start with a honey-soy glaze—mix ¼ cup honey, 2 tbsp soy sauce, 1 tbsp rice vinegar, and 1 tsp grated ginger. Simmer for 3 minutes to thicken slightly, then brush generously over pork and pineapple before baking.