These Lilac Sugar Cookies with Vanilla Lilac Icing are soft, buttery sugar cookies delicately infused with homemade lilac sugar and topped with a smooth, glossy vanilla glaze with subtle floral notes. Perfect for spring baking, garden parties, and elegant desserts, this easy lilac cookie recipe is a beautiful introduction to baking with edible flowers.
What Do Lilac Cookies Taste Like?
Lilac has a very gentle floral flavor, somewhere between lavender and honeysuckle, but softer. It’s not overpowering when used correctly. Instead, it adds a subtle flavor that pairs beautifully with vanilla and butter. You may also enjoy my lilac shortbread recipe if you’re looking for an egg free version! In these cookies, lilac is infused into sugar and then folded into a classic sugar cookie dough.
Are lilacs edible?
Lilacs are edible and part of the olive family, offering a delicate floral flavor that’s as beautiful as it is versatile. If you have the chance, take a slow, mindful afternoon to gently pluck each tiny blossom from its stem, then steep them in cream to create a fragrant floral milk perfect for cakes and buttercream. This infused cream can also be transformed into dreamy lattes, silky frostings like those used in lilac cake, or even lilac ice cream. Beyond that, lilacs can be preserved in a variety of ways, to raw local honey, as in a simple lilac honey recipe.
While making this recipe, you will want to infuse some lilacs in cream for your lilac icing.
How to Make Lilac Sugar
There are many ways to enjoy lilacs, but making lilac sugar is one of the simplest and most rewarding rituals to return to each spring. Enjoy our more comprehensive recipe on lilac sugar and our lilac sugar cubes.
You’ll need:
- Fresh, clean lilac blossoms (unsprayed and pesticide-free)
- Granulated sugar
Gently strip the lilac blossoms from the stems and layer them with sugar in a jar. Let it sit for 24–48 hours so the fragrance infuses the sugar. Then strain out the blossoms or use as is for a more rustic texture.
This lilac sugar becomes the heart of both the cookie and the glaze. You may also enjoy lilac syrup.
Ingredients for Lilac Sugar Cookies
These cookies are soft, slightly chewy, and buttery with crisp edges:
- 2 ¼ cups all-purpose flour 270g
- ½ teaspoon baking powder
- ¼ tablespoon baking soda
- 1 tablespoon cornstarch
- ½ teaspoon salt
- ½ cup unsalted butter (113 grams, 1 stick), room temperature
- 1 cup granulated sugar (200 grams)
- 1 egg at room temperature
- 1 ½ teaspoon tsp vanilla extract (8 ml)
- 2 tablespoons organic lilac flowers, removed from green stem and cleaned
Optional: a tiny pinch of lemon zest to brighten the floral notes.
Vanilla lilac icing
- 1 cup powdered sugar (120 grams)
- 1 teaspoon vanilla extract 5 ml
- 2 tablespoons milk or cream, lilac infused, plus more if needed (30ml)
Lilac Cookies:
- Create a lilac sugar by grinding your clean, dried lilac flowers with your granulated sugar. Do this in a mortar, pestle, food processor, or high speed blender.
- Wisk your dry ingredients – flour, salt, baking powder, baking soda, and cornstarch in a large bowl and set aside.
- Cream the butter and lilac lemon sugar until fluffy (about 2 minutes), then beat in the egg and vanilla, scraping the bowl down as needed.
- Add the dry ingredients to the wet and mix on low until combined.
- Shape the dough into a ball, then optionally cover in plastic or beeswax wrap and chill for an hour.
- Preheat oven to 350F. Roll the dough out to ¼ inch, then use a round circular cookie cutter to cut the cookies; reroll the scraps and cut the remaining cookies. Transfer cookies to parchment-lined baking sheets and bake at 350F for 10-14 minutes or until the cookies are just starting to get golden on the bottom. Set aside to cool completely.
- While the cookies bake and chill, make your icing.
Whisk everything together until smooth and pourable. The glaze should coat the back of a spoon but still drizzle easily.
Once the cookies are cool, dip or drizzle the glaze over the top and let it set.
Tips for Baking with Lilac
Lilac is delicate, so a little goes a long way:
- Only use edible, pesticide-free flowers
- Keep infusion times short to avoid bitterness
When to Serve Lilac Sugar Cookies
These cookies feel made for spring moments:
- Garden gatherings and outdoor brunches
- Afternoon tea
- Mother’s Day desserts
- Bridal showers or spring celebrations
- Or simply a quiet afternoon when lilacs are blooming outside your window
They also make a beautiful edible gift
Final Thoughts
These lilac sugar cookies are meant to feel like a small seasonal ritual—something you make when the world outside is turning green again and everything feels just a little softer than it did a month ago. They’re simple, fragrant, and fleeting in the best way, just like lilac season itself.