Servings: 16
If you are looking for a bright, refreshing, and incredibly easy dessert that comes together in minutes, these 3-Ingredient Lemon Bars are exactly what you need. They feature a buttery, crumbly shortbread-like crust, a bright and tangy lemon filling, and a golden, crumbly topping. It is the perfect treat for a spring brunch, a summer picnic, or a simple weekend snack.
The best part about this recipe is how simple it is. With just lemon cake mix, melted butter, and canned lemon pie filling, you can create a dessert that tastes like it came from a bakery without any of the fuss.
Why This Recipe Works
This recipe relies on the magic of lemon cake mix. The dry mix is combined with melted butter to create a soft, crumbly dough that bakes into a buttery, shortbread-like crust. The canned lemon pie filling provides a bright, tangy, and velvety layer that contrasts beautifully with the sweet, crumbly topping. Baking the bars until the filling is bubbling and the top is golden ensures the perfect balance of textures.
Ingredients
- 1 box (15.25 to 16.5 ounces) lemon cake mix
- 1/2 cup (1 stick, 113 g) unsalted butter, melted and slightly cooled
- 1 can (21 ounces) lemon pie filling
Directions
- Preheat your oven to 350°F (175°C). Lightly grease a clear 9×13-inch glass baking dish with butter or nonstick spray. This helps the bars release easily and lets you see the layers as they bake.
- In a medium mixing bowl, add the dry lemon cake mix. Pour in the melted, slightly cooled butter. Stir with a fork or spatula until the mixture is evenly moistened and forms soft, crumbly clumps—like damp sand. You should not see any dry patches of cake mix.
- Press about 2/3 of the buttery cake mixture evenly into the bottom of the prepared glass baking dish. Use your fingertips or the bottom of a measuring cup to press it into a firm, even layer, making sure to reach all corners. This will be your crust.
- Open the can of lemon pie filling and spoon it over the crust. Gently spread the filling into an even layer with an offset spatula or the back of a spoon, taking care not to pull up the crust underneath. You want a bright, smooth yellow layer from edge to edge.
- Sprinkle the remaining 1/3 of the cake-and-butter mixture evenly over the lemon pie filling. Let it fall in small clumps and crumbles rather than packing it down; this will create that slightly crumbly, golden top once baked.
- Place the baking dish on the center rack of the preheated oven. Bake for 25 to 30 minutes, or until the top is lightly golden in spots and the lemon filling is bubbling gently around the edges. The center will still look soft but should no longer appear very loose or wet.
- Remove the dish from the oven and place it on a cooling rack. Allow the lemon bars to cool completely in the glass dish; the filling will set as they cool. For cleaner cuts and a firmer texture, chill the cooled bars in the refrigerator for at least 1 to 2 hours before slicing.
- Once fully cooled (and chilled, if you prefer), use a sharp knife to cut the lemon bars into 16 squares or smaller bite-sized pieces. Wipe the knife between cuts for neater edges. Serve directly from the clear glass baking dish so everyone can see the bright yellow filling and golden, crumbly top.
Tips for the Best Results
Let the butter cool slightly. Melted butter that is too hot can melt the cake mix and create a greasy crust. Let it cool for a few minutes before mixing.
Don’t overmix the crust. Stir the cake mix and butter just until the mixture is evenly moistened and crumbly. Overmixing can make the crust tough.
Press the crust firmly. Use the bottom of a measuring cup or a flat glass to press the crust firmly into the pan. This prevents it from crumbling when you cut into it.
Watch the bake time. Ovens vary, so start checking at 25 minutes. You want the top lightly golden and the filling bubbling gently around the edges.
Chill before slicing. Chilling the bars for 1 to 2 hours after they cool makes them much easier to slice into clean, neat squares.
Storage and Serving
Store the lemon bars in an airtight container in the refrigerator for up to 4 days. They are best served chilled or at room temperature. Serve them on their own as a quick dessert or snack, or with a dollop of whipped cream and a sprinkle of fresh lemon zest.
Bright, tangy, and completely irresistible, these 3-Ingredient Lemon Bars are a fantastic recipe to keep in your rotation for easy baking.