Blueberry Lemon Bars with Meringue Topping
Servings: 24 bars Prep Time: 15 minutes Cook Time: 50 minutes Chill Time: 4 hours Total Time: About 5 hours
Imagine a cross between a lemon meringue pie and classic lemon bars—and then someone tossed in a handful of fresh blueberries for extra interest. That’s exactly what these bars are. Layered, beautiful, and bursting with flavor in every bite.
Yes, this recipe takes a little more time and effort than your typical bar dessert. But every step has a purpose, and the final result is truly a showstopper. These bars are the kind of thing you bring to a party and watch disappear in minutes. — and someone will immediately ask you for the recipe.
Let’s go over everything you need to know.
Read: Classic Shortbread Lemon Bars
What You’ll Need
For the Crust:
- 1½ cups all-purpose flour
- ½ cup almond flour
- ⅛ teaspoon salt
- ½ cup white sugar
- 4 tablespoons unsalted butter, softened to room temperature
- 4 tablespoons butter-flavored shortening
- ¼ teaspoon almond extract
For the Filling:
- 2 cups white sugar
- 1 cup all-purpose flour, sifted
- 1 cup freshly squeezed lemon juice
- ¼ cup honey
- 6 large eggs, separated (4 whites go into the filling, 2 are reserved for meringue)
- 2½ tablespoons fresh lemon zest
- ¼ teaspoon baking soda
- 1½ cups fresh blueberries
For the Meringue:
- 4 egg whites total (2 reserved from filling + 2 additional)
- ½ cup white sugar
- ¼ teaspoon cream of tartar
- ⅛ teaspoon fine salt
Equipment note: Use a 9×13-inch glass baking dish if possible. The lemon’s acidity can pick up a slightly metallic taste from a metal pan — glass keeps the flavors clean and pure.
Step-by-Step Instructions
Step 1: Make and Chill the Crust
In a bowl, combine the all-purpose flour, almond flour, and salt, then set aside. Fit a stand mixer with the paddle attachment and add the sugar, butter, shortening, and almond extract, beating until light and slightly fluffy. Add the flour mixture on low speed and mix just until it comes together—about one minute. As soon as the dough forms a ball, stop mixing. Overmixing at this stage will make the crust tough.
Using your floured hands, press the dough into the baking dish, building a half-inch-high rim around the edges of the pan. This small wall prevents the filling from seeping under the crust during baking. Cover and refrigerate for at least 30 minutes.
Step 2: Bake the Crust
Preheat your oven to 350°F (175°C). Bake the chilled crust on the middle rack of the oven until the edges are golden and the center is lightly golden—about 45 to 60 minutes. Ovens vary, so start checking at around 40 minutes. After baking, let the crust cool completely on a wire rack (about 30 minutes). Reduce your oven temperature to 300°F (150°C).
Patience is essential here. Putting the filling on a hot crust can cause setting issues. Let it cool completely.
Step 3: Prepare the Lemon Filling
While the crust is cooling, in a large bowl combine the sugar, sifted flour, lemon juice, honey, the yolks of 6 eggs, the whites of 4 eggs, lemon zest powder, and baking soda. Gently whisk just enough to combine all the ingredients. The goal here isn’t to incorporate air—a quick, light whisk is sufficient. Set aside the remaining two egg whites; they’ll be needed for the meringue.
Step 4: Add the Blueberries and Bake
Evenly scatter fresh blueberries over the cooled crust. Spoon the lemon filling on top and let it nestle around the berries.
Bake at 300°F (150°C) until the filling is set—no movement in the center, just a slight, firm jiggle when you shake the pan. This takes about 40 to 50 minutes. Check frequently toward the end. When done, turn off the oven and let the bars cool to room temperature on a wire rack, about 30 minutes.
Step 5: Make the Swiss Meringue
This is Swiss meringue, which means the egg whites and sugar are gradually heated before whipping. It’s more stable than regular meringue and yields a beautiful glossy finish.
Combine all four egg whites (two reserved and two fresh), sugar, cream of tartar, and salt in the top bowl of a double boiler. Place the bowl over a simmering pot of water and whisk constantly, scraping the sides of the bowl with a rubber spatula, until the sugar is completely dissolved and the mixture feels warm to the touch—about 2 to 3 minutes.
Remove from the heat and beat with an electric mixer on medium speed until soft peaks begin to form. Then increase the speed and continue beating until the meringue reaches stiff but still slightly spreadable peaks.
Step 6: Top and Toast
Use the back of a spatula or spoon to spread the meringue over the cooled blueberry-lemon filling. As you spread it, swirl it—these peaks and folds catch the broiler’s heat and turn a beautiful golden brown.
Position your oven rack about 6 inches from the broiler element and set the broiler to high. Place the pan inside and watch it closely. The meringue can go from perfectly golden to burnt in a matter of seconds—we’re talking a 30- to 60-second broil time. Don’t leave the oven during this stage.
Step 7: Chill and Cut
When the meringue is evenly golden brown, remove the pan from the oven and refrigerate the bars for at least three hours before cutting. Using a sharp knife, cut into 24 squares or triangles, wiping the blade clean after each cut for neat edges.
Helpful Tips and Swaps
These blueberry lemon meringue bars are a labor of love — there’s no denying that. But it’s also a recipe that rewards you for your effort in every layer. The nutty crust, the fruity lemon filling, the cloud of toasted meringue — it all comes together to make something that feels truly special.
Save this recipe for when you want to impress someone. Because you definitely will.
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