These delicate bars combine a tender, buttery shortbread crust with a silky lemon-lavender custard filling. The aromatic lavender pairs beautifully with bright citrus, while heavy cream adds richness to the filling. After baking, chilling sets the layers perfectly, and a final dusting of powdered sugar adds elegance. Ideal for teatime gatherings or special occasions when you want something sophisticated yet comforting.
The first time I brought these bars to a book club meeting, my friend Sarah actually stopped mid sentence to ask what made them taste like sunshine and calm all at once.
I had spent the entire rainy Saturday afternoon experimenting with lavender quantities, determined to get the balance right without ending up with something that tasted like soap.
Ingredients
- Unsalted butter (225 g): Room temperature butter creates that melt in your mouth shortbread style crust that is the backbone of these bars
- Granulated sugar (100 g for crust, 300 g for filling): The crust needs less sweetness to balance the tart filling, while the filling requires more to temper the lemon acidity
- All purpose flour (280 g total): Standard flour provides the right structure for both crust and filling without becoming tough
- Fine sea salt (1/4 tsp): Just enough to brighten all the flavors and make the lemon sing
- Large eggs (4): Room temperature eggs will blend more smoothly into the filling for that silky custard texture
- Lemon zest (2 tsp): Use a microplane to get only the colorful outer layer, avoiding the bitter white pith beneath
- Freshly squeezed lemon juice (120 ml): About 2 to 3 lemons worth, and freshly squeezed really does make a noticeable difference
- Dried culinary lavender (2 tsp): Culinary grade is essential here, crush the buds between your fingers to release their aromatic oils before adding
- Heavy cream (120 ml): This is what makes the filling luxuriously creamy and tames the lemon acidity
- Powdered sugar (2 tbsp): The final snowlike dusting makes these bars look as elegant as they taste
Instructions
- Prepare your pan and oven:
- Preheat to 350°F (175°C) and line a 9x9 inch pan with parchment paper, leaving those overhangs like little handles to lift the bars out later.
- Make the crust:
- Cream the softened butter and sugar until pale and fluffy, then fold in the flour and salt until just combined, press this mixture evenly into your pan.
- Bake the crust:
- Let it bake for 18 to 20 minutes until it turns a gentle golden color, then remove and let it cool slightly while you prepare the filling.
- Prepare the filling:
- Whisk eggs and sugar until they become pale and smooth, then add lemon zest, juice, crushed lavender, the remaining flour, cream, and pinch of salt.
- Add the filling and bake again:
- Pour the lavender mixture over your slightly cooled crust and return to the oven for another 18 to 20 minutes until the center is just set with a slight wobble.
- Let them cool completely:
- This is the hardest part, but let them cool in the pan, then chill for at least an hour before slicing into clean squares.
- Finish with powdered sugar:
- Dust generously with powdered sugar right before serving, watching it snow down over that beautiful pale yellow surface.
These became my go to contribution for bridal showers and tea parties after three different friends requested the recipe within one month.
Getting The Lavender Balance Right
Start with the 2 teaspoons called for, but if you are new to baking with floral ingredients, you might want to begin with half that amount. The flavor develops as the bars chill, so what seems subtle at room temperature will become more pronounced overnight.
The Meyer Lemon Option
If you can find Meyer lemons during their winter season, they bring this incredible sweetness and extra floral depth that pairs beautifully with the lavender. Regular lemons work perfectly well, but Meyers make these feel even more special.
Making Them Ahead
These bars actually improve with a day in the refrigerator, making them perfect for entertaining. The crust stays firm, the filling sets completely, and all the flavors have time to become friends.
- Wait to add the powdered sugar until right before serving or it will dissolve into the filling
- Use a hot knife to get clean slices, wiping it clean between each cut
- Store in the refrigerator for up to 5 days, though they rarely last that long
Every time I serve these, someone comments on how sophisticated they taste, never guessing they come from just a handful of simple ingredients.
Recipe Q&A
- → Can I use fresh lavender instead of dried?
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Fresh lavender can be used, but it's more potent than dried. Use about half the amount and crush it gently to release the oils. Be careful not to overdo it, as fresh lavender can become bitter.
- → How do I know when the filling is set?
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The filling is done when the center is just set—it should still have a slight wobble like gelatin, similar to cheesecake. It will continue firming up as it cools. Overbaking causes cracking.
- → Can I make these ahead of time?
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Yes! These bars actually improve after chilling overnight. Store them in the refrigerator for up to 3 days, but add the powdered sugar dusting just before serving, as humidity can make it dissolve.
- → What's the best way to crush the lavender?
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Place dried lavender in a mortar and pestle, or seal it in a plastic bag and use a rolling pin. You want to break the buds slightly to release flavor without creating a fine powder.
- → Can I freeze these bars?
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Absolutely! Wrap the uncut, chilled slab tightly in plastic and foil, then freeze for up to 2 months. Thaw overnight in the refrigerator before cutting and dusting with sugar.
- → Why does my crust shrink during baking?
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This usually happens if the dough is overmixed or pressed too thinly. Press the crust firmly and evenly into the pan, avoid overworking the dough, and let it cool slightly before adding the filling.