🥜 Soft & Chewy Sourdough Discard Peanut Butter Cookies — Classic Criss-Cross, Zero Waste

🥜 Soft & Chewy Sourdough Discard Peanut Butter Cookies — Classic Criss-Cross, Zero Waste

The cookie that eats your discard AND your willpower. Soft centers, salty-sweet edges, and that classic fork criss-cross.

Makes 24 • Beginner Friendly • Discard-Powered • Ready in ~35 Minutes

You know that little container of discard sitting in the fridge, judging you? Today it becomes the best peanut butter cookies you have ever made. Sourdough discard peanut butter cookies are soft in the middle, golden at the edges, and packed with real peanut flavor — and the discard adds a gentle tang that makes the sweetness taste deeper, not just sweeter.

No rise time. No fancy equipment. You stir, you scoop, you press that fork criss-cross, and in about ten minutes the kitchen smells like a bakery that actually likes you.

Why You'll Love This Recipe

• ✔ Uses a full cup of discard — real waste-busting baking
• ✔ Soft, chewy centers with golden, slightly crisp edges
• ✔ No chilling required — mix, scoop, and bake in about 35 minutes
• ✔ One bowl, no mixer needed — a spoon and a fork do it
• ✔ The discard adds gentle tang and extra chew plain peanut butter cookies lack
• ✔ Endlessly flexible — chunky or creamy peanut butter, chocolate chips, a flaky salt finish
• ✔ Freezes beautifully, so future-you always has cookies ready

Sourdough Discard Peanut Butter Cookies Ingredients

Dough

• 120 g sourdough discard (about 1/2 cup, unfed is perfect)
• 250 g creamy peanut butter (about 1 cup, conventional style works best)
• 115 g unsalted butter, softened (about 1/2 cup)
• 150 g brown sugar, packed (about 3/4 cup)
• 100 g granulated sugar (about 1/2 cup)
• 1 large egg, at room temperature
• 5 ml vanilla extract (about 1 teaspoon)
• 220 g all-purpose flour (about 1 3/4 cups)
• 4 g baking soda (about 3/4 teaspoon)
• 2 g baking powder (about 1/2 teaspoon)
• 2 g fine sea salt (about 1/4 teaspoon, skip if your peanut butter is very salty)

For Shaping

• 50 g granulated sugar, for rolling (about 1/4 cup, optional but lovely)
• Flaky sea salt, for sprinkling on warm cookies (optional, highly recommended)

🥣 Step 1: Cream the Butter, Sugars, and Peanut Butter

Beat the softened butter, brown sugar, and granulated sugar together until pale and fluffy — about two minutes with a spoon, or one minute with a hand mixer. Add the peanut butter and beat until completely smooth and glossy.

Beginner Tip: Conventional creamy peanut butter gives the most predictable dough. Natural peanut butter works too, but stir it extremely well first.

🥣 Step 2: Add the Discard, Egg, and Vanilla

Stir in the discard, egg, and vanilla until smooth. Do not worry if the discard looks bubbly or smells tangy — that is exactly what you want. The baking soda and baking powder do the rising here; the discard is here for flavor and chew, not lift.

Pro-Level Move: Older, sharper-smelling discard is fine — the tang mellows in the oven into a deeper, almost caramel-like flavor.

🥣 Step 3: Fold in the Dry Ingredients

Whisk the flour, baking soda, baking powder, and salt together, then fold in just until no dry streaks remain.

Beginner Tip: Overmixing turns chewy cookies tough. Gentle folds only. The dough should be soft, thick, and scoopable.

🥣 Step 4: Scoop, Roll, and Press the Criss-Cross

Preheat your oven to 175°C (350°F) and line two baking sheets with parchment. Scoop about 1 1/2 tablespoons of dough per cookie, roll into balls, and roll in granulated sugar if you like a sparkly, slightly crisp exterior. Space them about 5 cm (2 inches) apart.

Now the fun part: dip a fork in flour or sugar and press across each ball, first one way, then the other, for the classic criss-cross. Flatten to about 1 cm thick — do not squash it flat.

Beginner Tip: If the dough feels sticky, chill the bowl for 20–30 minutes first — a short chill makes shaping dramatically easier.

🥣 Step 5: Bake Until Just Golden

Bake for 10–12 minutes, until the edges are set and lightly golden but the centers still look soft and slightly puffy. They will look underdone. They are not. Trust the process.

Pro-Level Move: Sprinkle a tiny pinch of flaky sea salt over each cookie the moment it comes out of the oven. Salty-sweet peanut butter cookies are a different species of good.

🥣 Step 6: Cool on the Sheet, Then Devour

Rest the cookies on the sheet for 5–10 minutes — they go from fragile to perfectly chewy as they cool. Then transfer to a wire rack, or eat one warm and call it "testing."

👩🍳 Squirrelly Girl Baker's Tips

1. 🥜 Creamy vs. chunky is a personality test. Creamy gives you smooth, melt-in-your-mouth cookies. Chunky gives you crunchy peanut bits. Both are correct.

2. ⏱️ Pull them early, every time. The difference between chewy and crunchy is about 90 seconds. Golden edges plus soft centers is the sweet spot.

3. 🍫 Chocolate chips are never wrong. Fold in 100 g (about 2/3 cup) of dark or semi-sweet chips for a version that rivals our sourdough chocolate chip cookies.

4. 🧊 Chill for thicker cookies. A 30-minute chill makes taller, puffier cookies with less spread. Skip it when you are in a hurry.

5. ⚖️ Weigh the flour. Too much flour is the fastest route to dry, cakey cookies. A kitchen scale takes the guesswork out.

🧊 Make It Ahead

Baked cookies keep in an airtight container at room temperature for up to a week — if they last that long. For longer storage, freeze them with parchment between layers; they thaw on the counter in a couple of hours. The dough freezes well too: scoop balls, freeze solid, bag them, and bake straight from frozen with 2–3 extra minutes.

🚨 Sourdough Discard Peanut Butter Cookies Troubleshooting

Cookies spread into flat puddles

Butter too warm, or dough too soft. Chill the dough 30 minutes before shaping, and use cool baking sheets between batches — a hot sheet melts dough before the oven starts.

Cookies came out dry and cakey

Too much flour, or baked too long. Weigh your flour, and pull the next batch while the centers still look soft.

Dough is too sticky to roll

Natural peanut butter or a warm kitchen is usually the culprit. Chill the dough 30 minutes, wet your hands lightly, and roll quickly.

No criss-cross pattern showing

You pressed too gently, or the fork stuck. Dip the fork in flour or sugar between presses, and press firmly without flattening the cookie completely.

Cookies taste too tangy

Very old, very hungry discard can be assertive. Use discard a few days old rather than a few weeks old, or add an extra tablespoon of sugar. The tang should whisper, not shout.

⚠️ Baker's Warning

You are officially the person who turns "waste" into the cookie tin everyone raids. Friends will ask for the recipe, family will hover near the oven, and your discard will never sit in the fridge long enough to judge you again.

🐿️ Ready to Bake Better Sourdough?

If you do not have a starter yet — or yours has given up the ghost — this is your sign. Squirrelly Girl Starter is flaked dehydrated starter that wakes up fast, so you can be baking cookies like these within days of it arriving.

• ✔ FREE Worldwide Shipping
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• ✔ 100% Activation Guarantee — if it does not wake up, we make it right (see our Activation Guarantee)

👉 Get your Squirrelly Girl Sourdough Starter here and start turning discard into cookies instead of compost.

❓ FAQ: Sourdough Discard Peanut Butter Cookies

Can I use active starter instead of discard?

Yes. Stir it down flat first, then measure as usual — baking soda and baking powder handle the rise either way.

Do sourdough discard peanut butter cookies taste sour?

Not in the way you are imagining. The discard adds a subtle tang that deepens the peanut flavor, like buttermilk in a cake. Nobody will guess there is sourdough in there unless you tell them.

Can I make these gluten-free?

A 1-to-1 gluten-free flour blend works well, though the cookies will be more delicate. Let them cool fully on the sheet before moving them.

How much discard does this recipe use?

A generous 120 g (about 1/2 cup) — enough to make a real dent in a discard collection.

Can I chill the dough overnight?

Absolutely. An overnight chill deepens the flavor and gives thicker, chewier cookies. Let the dough sit at room temperature 15 minutes before scooping.

❤️ Happy Baking!

Soft centers. Salty edges. Zero waste.

One bowl. One fork. One very happy kitchen.

Go rescue that discard — it was a cookie all along.

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