Sourdough Butter Cookies Recipe

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Why This Recipe Works

• No stand mixer required – A hand mixer or even a whisk and spatula work perfectly.

• Uses active or discard starter – Straight from the fridge? Perfect.

• No eggs – Great for those with allergies or when you’re low on supplies.

• Freezer-friendly – Make the dough now, bake later.

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Ingredients

Metric measurements in parentheses.

• 1 cup (226g) unsalted butter – softened to room temperature (very important!)

• ¾ cup (90g) powdered sugar – sifted, no lumps

• ½ cup (120g) sourdough discard – unfed, straight from the fridge is fine

• 2 teaspoons vanilla extract – use pure vanilla for best flavor

• 2 cups (260g) all-purpose flour – spooned and leveled

• ½ teaspoon fine sea salt

• Optional topping: Coarse sugar or flaky sea salt (e.g., Maldon)

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Equipment

• Large mixing bowl

• Electric hand mixer or stand mixer with paddle attachment

• Spatula

• Plastic wrap

• Baking sheets

• Parchment paper

• Cookie scoop (optional, but helpful)

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Instructions (Active Time: 15 min | Chill: 60 min)

Phase 1: Cream the Base (Intensity: Low)

1. Prepare your butter. In a large bowl, beat the softened butter on medium speed for 1 minute until creamy and light in color. Do not skip this—proper creaming creates the tender crumb.

2. Add sugar. Add the powdered sugar and beat on low until combined, then increase to medium for 2 minutes. The mixture should look fluffy and pale.

3. Incorporate discard and vanilla. Add the sourdough discard and vanilla extract. Beat on low until just combined. The mixture may look slightly curdled—that is normal.

Phase 2: Dry Ingredients (Intensity: Medium)

4. Combine flour and salt. In a separate small bowl, whisk together the flour and salt.

5. Mix the dough. Gradually add the flour mixture to the butter mixture, mixing on low speed. Stop exactly when the flour disappears. Over-mixing will make the cookies tough.

6. Final texture check. The dough should be soft but not sticky. If it’s too sticky to handle, add 1 tablespoon of flour.

Phase 3: Shape & Chill (Critical Step)

7. Form a log. Turn the dough onto a sheet of plastic wrap. Shape it into a log about 2 inches (5 cm) in diameter and 8 inches (20 cm) long.

8. Wrap tightly. Roll the log in the plastic wrap, twisting the ends like a candy wrapper. This creates a uniform round shape.

9. Chill. Refrigerate for at least 1 hour (or up to 3 days). This is non-negotiable. Chilling solidifies the butter, preventing the cookies from spreading into pancakes.

Phase 4: Bake (Intensity: Low)

10. Preheat. Set your oven to 350°F (175°C). Line two baking sheets with parchment paper.

11. Slice. Unwrap the chilled dough log. Using a sharp knife, slice into ¼-inch (0.6 cm) thick rounds. You should get about 24 cookies.

12. Arrange. Place cookies 1 inch apart on the baking sheets. If desired, sprinkle with coarse sugar or a tiny pinch of flaky sea salt.

13. Bake. Bake one sheet at a time for 12–14 minutes, or until the edges are lightly golden brown. The centers will look pale—that’s correct.

14. Cool. Let cookies rest on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

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Pro Tips for Perfect Sourdough Butter Cookies

• Butter temperature is everything. If your butter is too cold, the dough won’t come together. If it’s melted, the cookies will spread into greasy puddles. Aim for 68°F (20°C)—soft to the touch but not shiny.

• Don’t skip the chill. I know it’s tempting. Don’t do it. Unchilled dough = flat cookies.

• Discard strength. A mature, tangy discard gives the best flavor. Very young starter (less than 1 week old) will taste mostly like flour.

• Double the batch. These freeze beautifully. Slice the dough log, freeze slices on a tray, then transfer to a bag. Bake frozen, adding 2–3 minutes to the bake time.

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Variations

• Citrus Zest: Add 1 tablespoon of finely grated lemon or orange zest with the vanilla.

• Chocolate Dip: After cooling, dip half of each cookie in melted dark chocolate. Let set on parchment.

• Spiced: Add ½ teaspoon cinnamon and ¼ teaspoon nutmeg to the flour.

• Vegan: Use plant-based butter and ensure your sourdough starter is water-only (no honey).

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Storage & Shelf Life

These cookies actually improve after day one—the sourdough flavor mellows and deepens.

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Nutrition Information

Per serving (1 cookie), based on 24 cookies. Approximate values.

*Note: Nutrition is calculated using unsalted butter, all-purpose flour, and standard sourdough discard (100% hydration). Adding salt flakes or coarse sugar will increase sodium and sugar slightly.*

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Recipe Card (Printable Summary)

Prep: 15 min | Chill: 1 hr | Bake: 12-14 min | Total: 1 hr 15 min
Yield: 24 cookies | Difficulty: Easy

Ingredients:
1 cup unsalted butter, ¾ cup powdered sugar, ½ cup sourdough discard, 2 tsp vanilla, 2 cups flour, ½ tsp salt.

Steps:
Cream butter + sugar → Add discard + vanilla → Mix in flour + salt → Form log → Chill 1 hour → Slice → Bake at 350°F for 12–14 min.

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Frequently Asked Questions

Can I use active sourdough starter?
Yes. Active (bubbly) starter works fine. The cookies will be slightly puffier and less tangy.

Why are my cookies spreading too much?
Three likely culprits: (1) Butter was too soft or melted. (2) Dough wasn’t chilled long enough. (3) Baking sheet was hot from a previous batch. Always start with a cool sheet.

Can I make these gluten-free?
Yes. Substitute a 1:1 gluten-free flour blend (with xanthan gum). The texture will be more crumbly but still delicious.

My dough is cracking when I slice it.
Let it sit at room temperature for 5–10 minutes before slicing. If it’s rock-hard from the freezer, that’s normal—press gently with the knife.

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Final Note from the Baker

These Sourdough Butter Cookies have saved my discard jar more times than I can count. They’re the cookie I bring to holiday parties, the one I pack in lunchboxes, and the one I hide in the freezer for bad days. The combination of European-style butter and fermented flour is unexpectedly elegant—like a shortbread that learned a new trick.