Two-Ingredient Lemon Bars prove that a bright, satisfying dessert doesn’t need a long ingredient list. With just a box of lemon cake mix and a can of lemon pie filling, you can make soft, chewy bars packed with sweet and tangy lemon flavor.
Preparation takes only a few minutes. Simply stir the two ingredients together, spread the thick batter into a 9×13-inch baking dish, and bake until the center sets and the edges become lightly golden. After cooling, cut the dessert into squares and serve.
These Two-Ingredient Lemon Bars work especially well when you need a quick dessert for a family meal, potluck, party, or afternoon treat. You can serve them exactly as they are or finish them with a light dusting of powdered sugar. For especially neat squares, chill the cooled bars for about 30 minutes before slicing.
I keep recipes like this around for those times when I want something homemade but don’t want to measure a counter full of ingredients. The first time I made lemon bars with cake mix and pie filling, I wasn’t sure two ingredients could really create a satisfying texture. However, the mixture baked into surprisingly soft, chewy bars with plenty of lemon flavor. I also discovered that patience matters after baking. They smell wonderful while they’re still warm, but letting them cool completely makes cutting much easier. When appearance matters, I refrigerate the whole pan for another 30 minutes and then slice it with a clean, sharp knife.
Two-Ingredient Lemon Bars: Easy Bright and Chewy Dessert
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- Add the lemon cake mix and lemon pie filling to a large mixing bowl.
- Stir thoroughly until the ingredients combine and no dry cake mix remains.
- Transfer the thick lemon batter to the prepared baking dish and spread it into an even layer.
- Bake for 25 to 30 minutes, until the edges become lightly golden and the center is set.
- Remove the baking dish from the oven and let the lemon bars cool completely in the pan.
- For cleaner slices, refrigerate the cooled bars for approximately 30 minutes before cutting.
- Cut into squares and dust lightly with optional powdered sugar before serving.
Notes
Mixing the Two-Ingredient Lemon Batter
Choose the Lemon Cake Mix and Pie Filling
The simplicity of Two-Ingredient Lemon Bars starts with the ingredient list.
You’ll need one 15- to 18-ounce box of lemon cake mix and one 15- to 16-ounce can of lemon pie filling.
That’s all you need for the basic recipe.
Before mixing, preheat your oven to 350°F (175°C).
Next, grease a 9×13-inch baking dish. Make sure you cover the bottom and corners so the finished bars release more easily.
Because different brands may package cake mix in slightly different sizes, the provided 15- to 18-ounce range gives you some flexibility.
Likewise, choose a standard can of prepared lemon pie filling in the 15- to 16-ounce range.
The cake mix provides the dry foundation, while the prepared pie filling supplies moisture, sweetness, and additional lemon flavor.
Stir Until No Dry Cake Mix Remains
Pour the lemon cake mix into a large mixing bowl.
Next, add the entire can of lemon pie filling.
Use a sturdy spoon or spatula to stir the two ingredients together.
At first, the mixture may seem thick. Continue stirring and scraping around the sides and bottom of the bowl.
Eventually, the cake mix and lemon filling will combine into a thick, uniform batter.
Make sure no obvious pockets of dry cake mix remain.
However, avoid complicating the recipe by adding the ingredients normally listed on the cake mix box. You don’t need eggs, oil, or water for this particular preparation.
Once everything looks evenly combined, the Two-Ingredient Lemon Bars are ready for the baking dish.
Spreading and Baking the Lemon Bars
Spread the Thick Batter Evenly
Transfer the lemon batter into the prepared 9×13-inch baking dish.
Because the mixture will be thicker than traditional cake batter, it may not spread across the pan by itself.
Instead, use a spatula or the back of a spoon to gently push the mixture toward the corners.
Smooth the surface into an even layer.
Pay particular attention to the corners and edges. If one area remains significantly thicker than another, the bars may bake unevenly.
Once the batter looks level, place the baking dish in the preheated oven.
The preparation for Two-Ingredient Lemon Bars really is that simple. Most of the remaining time involves baking and cooling.
Bake Until the Center Sets
Bake the lemon bars at 350°F (175°C) for approximately 25 to 30 minutes.
Start checking the pan near the lower end of the baking range.
The edges should look lightly golden, while the center should appear set.
Avoid judging these bars by the same appearance as a traditional cake. Their soft, chewy texture is part of what makes this simple dessert appealing.
Once the edges have developed a little color and the center has set, carefully remove the baking dish from the oven.
Place it on a heat-safe surface or cooling rack.
Now comes an important step: leave the bars in the pan and allow them to cool completely before cutting.
Cooling and Cutting the Lemon Bars
Let the Bars Cool Completely
Although warm lemon bars can smell tempting, cutting them immediately can make them difficult to portion neatly.
Instead, let the Two-Ingredient Lemon Bars cool completely in their baking dish.
As they cool, their texture firms and becomes easier to slice.
The exact cooling time can vary depending on your kitchen and baking dish. Therefore, focus on temperature rather than the clock.
The center should no longer feel warm before you begin cutting.
If you’re serving the bars casually at home, complete cooling may provide enough firmness for slicing.
However, if you want particularly neat squares for a party or dessert tray, an additional chilling period can help.
Chill for Cleaner Squares
Once the bars have completely cooled, place the pan in the refrigerator for approximately 30 minutes.
This optional step firms the bars further.
After chilling, use a sharp knife to cut the dessert into evenly sized squares.
Wipe the knife between cuts if crumbs or filling begin collecting on the blade.
That small extra step can make the finished pieces look cleaner.
For a simple decorative finish, lightly dust the tops with powdered sugar immediately before serving.
The powdered sugar remains optional and isn’t necessary for the basic Two-Ingredient Lemon Bars.
The bright yellow bars already offer plenty of sweet lemon flavor without additional toppings.
Serving and Enjoying the Lemon Bars
Keep the Presentation Simple
Two-Ingredient Lemon Bars don’t require elaborate decorating.
Their main appeal comes from the soft texture and bright lemon flavor.
For an easy finish, arrange the cooled squares on a serving platter.
If desired, sift a small amount of powdered sugar over the top.
Because powdered sugar can absorb moisture over time, consider adding it shortly before serving if appearance matters.
You can cut the dessert into larger squares for a casual family treat or smaller pieces when serving a crowd.
Either way, allow the bars to cool fully before transferring them from the baking dish.
Make Them for Easy Occasions
This recipe works particularly well when you need dessert without a complicated preparation process.
The two required ingredients also make shopping simple.
Because the batter comes together in one bowl, cleanup stays manageable as well.
You can prepare Two-Ingredient Lemon Bars for potlucks, casual gatherings, family desserts, or whenever you’re craving something sweet and citrusy.
Most importantly, don’t rush the cooling stage.
The bars develop a more manageable texture as they cool, while the optional 30-minute refrigeration period makes clean slicing even easier.
With a box of lemon cake mix, a can of lemon pie filling, and a baking dish, you can have a bright lemon dessert ready with very little hands-on work.
Ingredients
- 1 box (15–18 ounces) lemon cake mix
- 1 can (15–16 ounces) lemon pie filling
- Powdered sugar, optional, for serving
Instructions
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- Add the lemon cake mix and lemon pie filling to a large mixing bowl.
- Stir thoroughly until the ingredients combine and no dry cake mix remains.
- Transfer the thick batter to the prepared baking dish and spread it into an even layer.
- Bake for 25 to 30 minutes, until the edges become lightly golden and the center looks set.
- Remove the baking dish from the oven and let the bars cool completely in the pan.
- For cleaner slices, refrigerate the cooled bars for approximately 30 minutes.
- Cut into squares and dust with optional powdered sugar before serving.
Frequently Asked Questions
Do Two-Ingredient Lemon Bars really need only two ingredients?
Yes. The basic recipe uses one box of lemon cake mix and one can of lemon pie filling. Powdered sugar remains an optional finishing touch.
Do I prepare the lemon cake mix according to the box directions?
No. Use the dry lemon cake mix directly from the package and combine it with the lemon pie filling. Don’t add the eggs, oil, or water normally used to prepare a boxed cake.
How do I know when the lemon bars are finished baking?
Bake them for approximately 25 to 30 minutes. The edges should become lightly golden, and the center should look set.
Why should I cool the bars before cutting them?
Cooling allows the soft bars to firm up, which makes slicing easier. For especially clean squares, refrigerate the completely cooled pan for about 30 minutes before cutting.
Can I put powdered sugar on Two-Ingredient Lemon Bars?
Yes. Powdered sugar makes a simple optional topping. Dust a light layer over the cooled bars before serving.
Conclusion
Two-Ingredient Lemon Bars make it easy to prepare a bright lemon dessert without measuring a long list of ingredients.
A box of lemon cake mix and a can of lemon pie filling create the entire batter. Simply stir them together, spread the mixture into a greased 9×13-inch baking dish, and bake at 350°F for 25 to 30 minutes.
Once baked, let the bars cool completely before cutting. For cleaner squares, refrigerate them for an additional 30 minutes.
Serve Two-Ingredient Lemon Bars plain or finish them with a light dusting of powdered sugar. Either way, you get a soft, chewy lemon dessert with minimal preparation and plenty of refreshing citrus flavor.
