3-Ingredient Lemon Dump Cake (Easy, Bright & Buttery Dessert)

This Lemon Dump Cake is one of the easiest desserts you can make—bright, buttery, and packed with sweet-tangy lemon flavor. Made with just 3 simple ingredients, this easy dump cake recipe bakes into a soft, gooey lemon filling with a crisp buttery topping. It’s perfect when you need a quick dessert for potlucks, family gatherings, holidays, or busy weeknights.

If you love effortless desserts like Strawberry Icebox Cake, classic citrus treats like Lemon Bars, or bakery-style favorites like Lemon Loaf Cake, this easy lemon dessert is a must-try. You can also explore the Dessert Recipes collection for more quick, cozy sweets.

Why You’ll Love This

• Only 3 ingredients (super simple)

• No mixing required — just layer and bake

• Bright lemon flavor with a buttery topping

• Perfect last-minute dessert for parties

• Great for potlucks, gatherings, or weeknights

Recipe Card

• Prep Time: 5 minutes

• Cook Time: 40–45 minutes

• Total Time: 50 minutes

• Servings: 9

Nutrition Information

(per serving)

• Calories: 300

• Protein: 3g

• Carbohydrates: 40g

• Fat: 14g

• Fiber: 1g

• Sugar: 26g

Ingredients

• 1 box lemon cake mix (15.25 oz / 432 g)

• 1 (21 oz) can lemon pie filling (595 g)

• ½ cup unsalted butter, melted (115 g)

• Optional for serving: whipped cream, vanilla ice cream, or fresh berries

Instructions

1. Preheat oven to 350°F (175°C). Grease a 9x9-inch (23x23 cm) baking dish.

2. Add filling Spread lemon pie filling evenly in the bottom of the dish.

3. Add cake mix Sprinkle dry cake mix evenly over the filling (do not mix).

4. Add butter Drizzle melted butter slowly over the cake mix, covering as much dry mix as possible for an even topping.

5. Bake for 40–45 minutes until golden and bubbly.

6. Rotate the dish halfway through baking if your oven browns unevenly.

7. Cool slightly Let cool for 10–15 minutes before serving.

Tips & Variations

• Add blueberries or strawberries for a lemon berry version

• Use white or vanilla cake mix for a milder flavor

• Top with whipped cream or vanilla ice cream

• Make it extra rich with cream cheese dollops

• Ensure butter covers most of the dry mix for even baking

What to Serve With Lemon Dump Cake

• Fresh berries for extra brightness

• Vanilla ice cream for contrast

• Lemon Berry Trifle for a dessert spread

• Hot coffee or iced tea

• Whipped cream with lemon zest

Make-Ahead & Storage

Store covered in the refrigerator for up to 4 days. Reheat gently before serving if desired.

More Summer Dessert Ideas

If you love this easy Lemon Dump Cake recipe, try one of these next:

Blueberry Crisp

Lemon Icebox Cake

Mini Strawberry Cream Cheese Pies

Pineapple Coconut Mousse

Blueberry Crisp Lemon Icebox Cake Strawberry Cream Cheese Pies  Pineapple Coconut Mousse

FAQ

Why is my dump cake powdery?

The butter didn’t fully cover the cake mix — try spreading it more evenly.

Can I mix the ingredients?

No — the layering is what creates the texture.

Can I use fresh lemon filling?

Yes, but canned is easiest and most consistent.

Can I make lemon dump cake ahead of time?

Yes. You can bake it a day ahead and refrigerate until serving.

Can I use lemon curd instead of pie filling?

Lemon curd is richer and thicker, so results may vary.

Should lemon dump cake be refrigerated?

Yes. Because of the fruit filling, refrigerate leftovers.

Can I freeze dump cake?

Yes. Freeze portions tightly wrapped for up to 2 months.

Final Thoughts

This 3 ingredient lemon dump cake is the ultimate easy dessert — bright, buttery, and incredibly simple to make. It’s perfect when you want something homemade without the effort, and it always delivers that cozy, crowd-pleasing flavor.

If you’re building your lemon dessert lineup, try Lemon Berry Trifle or Lemon Ricotta Bundt Cakes next for more easy, high-performing recipes.