This 3-Ingredient Pineapple Lemon Dessert is an easy lemon-pineapple dump cake made with dry lemon cake mix, undrained crushed pineapple, and melted unsalted butter. Simply layer the pineapple and cake mix, cover the surface with butter, and bake at 350°F for 35–40 minutes for a golden, bubbling dessert that serves 12–16 people.
Every spoonful brings together bright lemon flavor, juicy pineapple, and a buttery cake topping with crisp golden edges. It takes only 5–10 minutes to prepare, rests for about 10 minutes after baking, and is especially delicious served warm with vanilla ice cream.
Jump to RecipeWhy You’ll Love This Recipe
There is a special kind of comfort in a dessert that asks almost nothing of the cook. This pineapple lemon dessert uses one baking dish, three everyday ingredients, and no mixing bowl, making it a dependable choice for busy weeknights, casual gatherings, and last-minute entertaining.
The flavor is sunny without being complicated. Lemon cake mix supplies a fragrant citrus note, while crushed pineapple adds juicy fruit and a gentle tropical sweetness that keeps the dessert from tasting flat.
The texture is just as inviting. The bottom becomes soft and spoonable as the pineapple juice cooks into the cake mix, while the buttered surface turns golden and lightly crisp around the edges.
For another citrus-forward bake to keep on your dessert list, take a look at this coconut lemon cake. It has a more traditional cake texture, while this recipe is intentionally rustic and spoonable.
Ingredients You’ll Need
The ingredient list is short, but each item has an important job. Use the measurements below for the familiar 9-by-13-inch version, which produces approximately 12–16 servings.
- 1 box lemon cake mix: Use the dry mix directly from the package. There is no need to prepare it according to the box directions.
- 1 can crushed pineapple in juice: Choose a 20-ounce can and do not drain it. The juice is essential because it hydrates the dry cake mix during baking.
- 1/2 cup unsalted butter: Melt one stick, or use cold butter cut into very thin slices. Unsalted butter lets the lemon and pineapple flavors remain clear.
Before beginning, lightly grease a 9-by-13-inch baking dish and preheat the oven to 350°F (175°C). Since the layers are assembled directly in the dish, having everything ready makes the five-to-ten-minute preparation especially quick.
If you enjoy keeping simple, portion-friendly treats on hand, you may also like these three-ingredient cheesecake bites for a no-bake option with a creamy finish.
How to Make It Step-by-Step
Step 1: Heat the oven to 350°F (175°C), then lightly grease a 9-by-13-inch baking dish. Greasing helps with serving and makes it easier to scoop the fruit and topping from the corners after the dessert has rested.
Step 2: Pour the undrained crushed pineapple evenly into the prepared dish. Spread it from edge to edge so the fruit and its juice create an even base rather than collecting in one area.
Step 3: Sprinkle the dry lemon cake mix evenly over the pineapple. Do not stir the layers together; leaving them separate allows the pineapple juice to rise into the mix naturally while the dessert bakes.
Step 4: Drizzle the melted butter over the entire surface of the cake mix. Move the spoon or measuring cup back and forth across the dish so the butter reaches as much of the dry topping as possible, since uncovered areas may remain powdery.
Step 5: Bake for 35–40 minutes, checking for a golden top and bubbling pineapple mixture around the edges. The center may still look soft when it comes out, but it will settle as the dessert stands.
Step 6: Let the baked dessert rest for about 10 minutes before serving. This brief pause allows the fruit juices to thicken slightly and makes each spoonful easier to portion.
Pro Tips for the Best Texture
The most important rule is simple: do not drain the pineapple. Its juice is the moisture needed to hydrate the cake mix, and removing it can leave the finished dessert dry or powdery.
Butter coverage matters just as much. Melted butter is convenient because it can be drizzled over the surface, but pour it slowly and evenly rather than creating one large puddle in the middle.
If you prefer to use cold butter, cut it into very thin slices and distribute those slices across the entire top. Thick pieces can melt unevenly, leaving some parts of the cake mix exposed.
Do not stir the ingredients after layering. A dump cake is designed to bake in distinct layers, with the fruit softening below and the cake mix transforming into a buttery topping above.
Ovens can vary, so begin checking near the 35-minute mark. Look for a golden surface and bubbling fruit at the edges instead of relying only on the clock.
For a larger dessert spread, the bright lemon theme pairs nicely with savory dishes such as this lemon garlic chicken. The fresh citrus note can carry naturally from the main course into dessert without making the menu feel repetitive.
Serving, Storage & Reheating
This dessert is at its most comforting when served warm, about 10 minutes after it leaves the oven. Spoon it into shallow bowls so each serving includes soft pineapple from the bottom and plenty of golden topping from above.
Vanilla ice cream is the classic companion. The cold, creamy scoop melts into the warm fruit and creates a simple sauce, but the dessert is also satisfying plain if you want the lemon and pineapple flavors to stand on their own.
For a casual dessert table, set out the baking dish with a serving spoon and let guests help themselves. It is also easy to pair with other shareable sweets, such as this apple dessert pizza, for a fruit-filled assortment.
Store leftovers covered in the refrigerator. To reheat, warm individual portions gently until heated through, or rewarm a larger portion in an oven-safe dish; the topping is best enjoyed soon after baking because it gradually softens as it absorbs the fruit juices.
For the best presentation, add ice cream only at serving time. A scoop placed on the warm dessert highlights the contrast between the crisp golden topping, tender pineapple, and cool vanilla cream.
If you are building a no-bake dessert selection alongside this warm bake, a colorful cherry cheesecake dip makes a fun contrast with its creamy texture and berry flavor.
3-Ingredient Pineapple Lemon Dessert
Ingredients
Method
- Heat the oven to 350°F (175°C) and lightly grease a 9-by-13-inch baking dish. Pour the undrained crushed pineapple evenly into the bottom of the dish.
- Sprinkle the dry lemon cake mix evenly over the pineapple. Do not stir the layers together, because the pineapple juice needs to remain underneath the mix to provide moisture as the dessert bakes.
- Drizzle the melted butter over the entire surface, taking care to cover as much of the cake mix as possible. If using cold butter instead, slice it very thinly and distribute the pieces evenly over the top.
- Bake for 35–40 minutes, until the top is golden and the pineapple mixture is bubbling around the edges. Let the dessert stand for about 10 minutes before spooning it into bowls.
Notes
Final Thoughts
This 3-Ingredient Pineapple Lemon Dessert proves that an impressive homemade sweet does not require a long ingredient list or complicated technique. With dry lemon cake mix, undrained crushed pineapple, and one stick of butter, you can create a golden, bubbling dessert in about 50–60 minutes from start to finish.
Remember the two details that make the biggest difference: keep the pineapple undrained and cover the cake mix as evenly as possible with butter. Those steps help produce the tender fruit layer and buttery topping that make every bite so appealing.
Serve it warm after its 10-minute rest, either on its own or with vanilla ice cream. Whether you bring it to a potluck, serve it after a family dinner, or make it simply because you want something sunny and sweet, this lemon-pineapple dessert is wonderfully easy to repeat.