Lemon Blueberry Shortbread Bars
Bright, buttery, and bursting with fresh flavor, these lemon blueberry shortbread bars are basically sunshine in dessert form. A soft, melt in your mouth shortbread base sets the stage for pops of juicy blueberries and a zesty lemon twist that keeps every bite light, fresh, and perfectly balanced. They’re the kind of treat that feels just as right at a spring brunch or summer picnic as it does with an afternoon coffee break, simple, classic, and irresistibly good, with just enough citrusy brightness to keep you reaching for one more square!
Endless Flavor Swaps
One of the best parts about these bars is just how easy they are to customize. We’ve already played around with a strawberry lemon version, and the possibilities really don’t stop there, raspberry, blackberry, mixed berry, or even a simple classic lemon all work beautifully with the buttery shortbread base. You can swap the fruit to match the season, what you have on hand, or just whatever you’re craving that week. It’s simple, flexible recipe that lets you get creative without any extra effort, making it perfect for experimenting and putting your own spin on it every single time!
Even though I’ve never been the biggest lemon dessert person, these completely won me over. They’re bright without being too tart, sweet without being heavy, and somehow feel light and refreshing with every bite. The buttery shortbread balances the lemon perfectly and the pop of blueberry makes them feel fresh and not overwhelming at all. They’re the kind of dessert you keep reaching for “just one more” of! They are easy, sunny, and surprisingly addictive, even for someone ho usually skips the lemon section!
This is the Italian Method (not French) — Why?
For this recipe, I use the Italian meringue method rather than the French method—and for good reason. While the Italian method is slightly more technical, it produces a much more stable and less fragile macaron shell, which means more consistent results overall. The French method is quicker, but it’s easier to overmix and can lead to clumps or an unstable batter.
The key difference comes down to how the sugar is incorporated. With the Italian method, a hot sugar syrup is poured into whipped egg whites to create a strong, glossy meringue, which is then folded into the almond flour paste. The French method, on the other hand, involves gradually adding granulated sugar directly into raw egg whites and folding the dry ingredients into the meringue—making the batter more sensitive to overmixing.
Why I Measure in Grams (and You Might Want To, Too)
If you’ve ever made the same recipe twice and gotten two totally different results, the measuring method is often the reason.
Professional bakeries almost always measure by weight, not volume. Measuring cups leave room for inconsistency—especially with ingredients that pack differently depending on how you scoop or pour them. A scale removes all of that guesswork.
One of the biggest offenders is sugar. Different sugars (and even the same sugar measured by different people) can vary wildly in volume, but 100 grams is always 100 grams. Measuring by weight gives you repeatable, bakery-consistent results and cuts down on extra dishes at the same time.
A food scale is one of the best (and most affordable) investments you can make for your kitchen if you love baking and want your recipes to turn out exactly the same every time.
Ingredients To Prepare
Before baking, take a few minutes to gather the ingredients below and to ensure that they are soft, delicious, and super refreshing!
Once you have all of the ingredients ready to go, you’re officially set up for lemon blueberry shortbread bar success. I always recommend measuring everything out ahead of time so the process is smoother, and you can focus on making the best bars possible!
Lemon Blueberry Shortbread Bars
Ingredients
- 2 cups of blueberries fresh or frozen
- 2 tbsp lemon juice
- 1/4 cup white sugar
- 2 tsp corn starch
- 2 tsp water
- 1 cup of butter salted or unsalted
- 1/4 cup brown sugar
- 3/4 cup white sugar
- 2 tsp vanilla extract
- 2 tsp lemon extract
- 1 tbsp lemon juice
- 1 tsp salt
- 2 cups of All-purpose flour
- powdered sugar
Method
- Preheat the oven to 350°F (convection).
- In a medium saucepan, combine the blueberries and sugar. Add the lemon juice, if using.
- Place the saucepan over medium-low heat and stir until the mixture begins to bubble.
- Once bubbling, stir in the cornstarch–water mixture while continuing to cook.
- Let the jam simmer on medium-low heat for 3–4 minutes, stirring every minute or so, until thickened. Remove from heat and set aside.
- In a separate bowl, whisk the butter until light and off-white.
- Add the sugars and mix until fluffy.
- Mix in the vanilla extract, lemon extract, and lemon juice.
- Add the salt and flour and mix just until a soft dough forms.
- Butter and line a 9×9-inch pan with parchment paper (binder clips can be used to secure the sides, if oven-safe).
- Press about ¾ of the dough evenly into the bottom of the pan.
- Spread the blueberry jam over the crust, then crumble the remaining dough evenly on top.
- Bake for 42–44 minutes, until lightly golden and set.
- Allow the bars to cool completely before dusting with powdered sugar, if desired. Slice and serve.
- Store in the refrigerator for up to 10 days, or at room temperature for up to 8 days.
I think you forgot the directions for the shortbread I only see directions for the jam
Could you add the measurements in gramms?
Tip: the short bread is easier to flatten and mold to the pan when chilled and if it’s sliding around the pan too much use clean hands to flatten.