Sourdough Discard Shortbread Cookies (Buttery and Crisp)
These sourdough shortbread cookies turn leftover discard into a buttery, crisp treat that bakes up with golden edges and a tender snap. No fussy chilling steps beyond a quick rest while the oven heats.
They hold their shape perfectly for neat rounds or simple squares, and the faint tang from the starter makes them more interesting than plain shortbread, not sour.
Why These Are My Go-To Discard Cookies
The sourdough discard adds a subtle tang that balances the butter without turning the dough sticky or heavy. You get classic shortbread crunch with just a whisper of fermented flavor.
I never waste discard now. This recipe uses a full cup, and the cookies taste like a proper treat, not a compromise.
They slice clean and bake evenly, so you can cut them thin for a delicate snap or a little thicker for a softer center.
Ingredients
- 1 cup (2 sticks) unsalted butter, softened: European‑style butter gives extra richness, but any unsalted works.
- 1/2 cup granulated sugar: plain white sugar keeps the texture short and sandy.
- 2 cups all-purpose flour: spooned and leveled, not scooped.
- 1 cup sourdough discard (unfed): straight from the fridge is fine.
- 1 tsp vanilla extract: the real stuff if you have it.
- 1/4 tsp fine sea salt: a little more if your butter is unsalted.
Variations / Substitutions
- Lemon zest: add 1 tbsp finely grated zest with the butter and sugar for a bright, lemony edge.
- Lavender: rub 1 tsp dried culinary lavender into the sugar before creaming, for a floral note.
- Chocolate dip: once cooled, dip half of each cookie in melted dark chocolate and let set on parchment.
- Gluten‑free: swap the flour for a 1:1 gluten‑free baking blend; the texture will be slightly more crumbly.
Brown Butter Shortbread Cookies are another dessert you’d probably love if you enjoy these cookies.
How to Make Sourdough Shortbread Cookies
Step 1: Cream Butter and Sugar
Beat the 1 cup softened butter and 1/2 cup sugar in a large bowl with an electric mixer on medium speed until light and fluffy, about 2 minutes. Scrape down the sides once so no butter hides at the bottom.
The mixture should look pale and creamy, with no gritty sugar grains when you rub a bit between your fingers. This step builds the cookies’ tender structure.
Step 2: Mix in Discard and Dry Ingredients
Add the 1 cup sourdough discard and 1 tsp vanilla, and mix on low just until combined. It will look a little curdled at first, but it smooths out once the flour goes in.
In a separate small bowl, whisk together the 2 cups flour and 1/4 tsp salt. Tip the dry ingredients into the butter mixture and mix on low until the dough comes together in a soft, cohesive ball. Stop as soon as it pulls away from the sides of the bowl. Overmixing makes the cookies tough.
Step 3: Shape the Dough
Divide the dough in half. Roll each half into a log about 1 1/2 inches thick, wrap tightly in plastic wrap, and chill in the fridge for 30 minutes (you can go up to 3 days at this stage). The log should be firm enough to slice cleanly without squishing.
If the dough feels too soft to roll, pat it into a disk and chill for 10 minutes first, then shape. Doing this with cool hands keeps the butter from melting.
Step 4: Slice and Bake
Heat the oven to 350°F (175°C) and line two baking sheets with parchment paper. Unwrap the chilled logs and slice them into 1/4-inch thick rounds with a sharp knife. If the slices crack a little at the edges, just press them back together with your fingers.
Arrange the rounds on the sheets about an inch apart. Bake for 12 to 15 minutes, until the edges are just turning golden and the tops look dry. Rotate the pans halfway through so everything browns evenly.
Step 5: Cool and Dust with Sugar
Leave the cookies on the baking sheets for 5 minutes, then transfer them to a wire rack to cool completely. They firm up as they cool, so don’t move them too soon.
Once cooled, dust with powdered sugar using a fine sieve if you like a little snowy finish, and serve. The cookies keep their crisp bite for days.
A Few Notes Before You Bake
- Keep the dough cold between steps. If the log softens while slicing, pop it back in the fridge for 10 minutes before cutting more rounds.
- Weigh your flour if you can (240 g for the 2 cups). Too much flour is the fastest route to dry, sandy cookies.
- Use unsalted butter so you control the salt. If you only have salted butter, skip the added salt in the recipe.
- For a crunchier top, sprinkle a little coarse sanding sugar over the rounds right before they go into the oven.
Make-Ahead and Storing
- Refrigerate: Store baked cookies in an airtight container for up to 1 week. Unbaked dough logs keep in the fridge for up to 3 days.
- Freeze: Freeze unbaked sliced dough rounds on a parchment-lined sheet until solid, then transfer to a freezer bag for up to 3 months. Bake from frozen, adding 2 to 3 minutes to the time.
- Serve cold: These are crisp at room temperature, but you can also enjoy them straight from the fridge for an extra-firm snap.
What to Serve with Sourdough Shortbread Cookies
A strong black tea or a dark roast coffee cuts through the butter and brings out the cookies’ slight tang. For something sweet, try a mug of hot chocolate or a small glass of cold milk. They also make a not-too-sweet companion to vanilla ice cream.
Frequently Asked Questions
Can I use discard that’s been in the fridge for a week?
Yes, as long as it smells fresh and has no mold. Older discard gives a slightly tangier result, which works well here.
Why did my cookies spread too much?
The dough likely got too warm before baking, or the butter was over-soft when you started. Chilling the shaped logs thoroughly and working with cool butter fixes this.
Can I make these without sourdough discard?
You can, but they won’t have the same character. Replace the discard with an extra 3/4 cup flour and 1 tbsp water to keep the dough texture close. The flavor will be plain shortbread.
Do I need to feed my starter before taking discard for this recipe?
No. Use unfed discard straight from the jar. The baking powder isn’t needed here because the cookies don’t rely on the discard for lift.
Sourdough Shortbread Cookies Recipe
Ingredients
Method
- Beat butter and sugar until light and fluffy, about 2 minutes.
- Mix in sourdough discard and vanilla, then add flour and salt, mixing just until dough forms.
- Divide dough in half, roll into 1 1/2-inch logs, wrap in plastic, and chill 30 minutes.
- Preheat oven to 350°F (175°C). Slice logs into 1/4-inch rounds, place on parchment-lined sheets, and bake 12 minutes until edges are golden.
- Cool on sheets 5 minutes, transfer to a rack, and dust with powdered sugar if desired.
Notes
