Aunt Karen swore this was the easiest potluck dessert—sweet, buttery, and somehow gone in minutes.

This is Aunt Karen’s famous pineapple dump cake—the one she swore was the easiest potluck dessert ever. It’s literally just crushed pineapple, a box of yellow cake mix, and butter, all baked together until the top is golden, crumbly, and buttery with juicy pineapple bubbling up around the edges. My aunt brought this to every church potluck and family cookout when I was growing up in the Midwest, and it was always the first pan scraped clean. It’s perfect for busy weeknights, last-minute invites, or any time you want a sweet, crowd-pleasing dessert that takes almost no effort.
Serve this pineapple dump cake warm, straight from the 9×13 metal pan, with a scoop of vanilla ice cream or a dollop of whipped cream to balance the sweetness and highlight that buttery topping. It’s great alongside coffee after a casual dinner, or as part of a dessert table with brownies and cookies at a potluck. If you’re bringing it to a gathering, bake it in a sturdy metal pan so it travels well, then rewarm in a low oven before serving. Leftovers (if you’re lucky enough to have any) are delicious chilled or gently reheated in the microwave.
Aunt Karen’s Pineapple Dump Cake
Servings: 12
Ingredients
1 can (20 ounces) crushed pineapple in juice, undrained
1 box (15.25 ounces) yellow cake mix (dry, straight from the box)
1/2 cup (1 stick/8 tablespoons) unsalted butter, melted
Nonstick cooking spray or a little butter, for greasing the pan
Directions
Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch metal baking pan with nonstick spray or a thin layer of butter. Using a metal pan helps the edges get perfectly golden and slightly crisp.
Pour the entire can of crushed pineapple, including all the juice, into the prepared 9×13 metal pan. Use a spatula or spoon to spread the pineapple into an even layer, making sure it reaches all the corners.
Sprinkle the dry yellow cake mix evenly over the pineapple layer. Do not stir. Gently shake the pan or lightly tap it on the counter to help the cake mix settle into a flat, even layer over the fruit.
Slowly drizzle the melted butter evenly over the top of the dry cake mix, trying to cover as much of the surface as possible. It’s okay if a few dry spots remain—those will still bake up into a crumbly, buttery topping.
Place the pan on the center rack of the preheated oven and bake for 35–45 minutes, or until the top is golden brown, the edges are bubbly with pineapple juice, and the center looks set. The surface should look crumbly and slightly crisp in spots.
Remove the pan from the oven and let the dump cake cool on a heat-safe surface (like your speckled granite countertop) for at least 10–15 minutes. The juices will thicken slightly as it rests, making it easier to scoop.
Serve warm, scooped straight from the pan into bowls. Add vanilla ice cream or whipped cream if you like. Store any leftovers covered in the fridge for up to 3 days and reheat gently in the microwave or enjoy chilled.

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