Sourdough Chocolate Raspberry Cookies are the darkest, fudgiest cookie in my sourdough cookie line-up, a deep cocoa dough studded with dark chocolate and pockets of raspberry that stay sharp and whole rather than smudging pink through the crumb. The tang from the discard keeps all that richness from tipping into too sweet, and the raspberry cuts straight through the chocolate instead of getting lost in it.
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The whole recipe is properly low-effort too. No chilling to time, no fussing over the raspberries once they're folded in. Scoop the dough, freeze it solid, then bake straight from frozen whenever you fancy a batch, the freezer does the waiting for you.
This is the cocoa-based sibling to my Triple Chocolate Sourdough Cookies, built the same way with browned butter and discard, but with frozen raspberries folded through instead of extra chocolate. It's richer and more grown-up than the white chocolate version, and it comes with a second problem they don't have to deal with: working out when a cookie this dark is actually done.
Recipe Highlights
TASTE: Rich, fudgy dark chocolate with sharp little bursts of raspberry
THE FIX: Scooped and frozen, never chilled, so the raspberries never get the chance to bleed
DONENESS CUE: Matte, slightly cracked top, not golden edges
SEB'S RATING: Thinks they're better the next day. I disagree.
Ingredient Notes
- Dark chocolate chips: dark keeps the sweetness in check against the sugar and fruit. Milk or semi-sweet works fine too, weight for weight, if you want it sweeter.
- Cocoa powder: natural or Dutch-process both work, but be aware Dutch-process gives a darker, slightly redder crumb, which makes the "look for golden edges" instinct even less useful here. More on judging doneness properly below.
- Frozen raspberries, specifically: fresh raspberries mash and bleed the moment you fold them in. Freeze-dried ones go the other way, dry and papery with none of the juiciness that makes this cookie worth making. Frozen is the only version that holds its shape long enough to survive folding and freezing intact.
- Sourdough discard: unfed, straight from the fridge, doing the same job it does in my Triple Chocolate Sourdough Cookies, a proper chew and a faint tang against all that chocolate. That post covers the technique in more depth if you want it.
Find the full ingredient quantities and instructions in the recipe card below.
STEP-BY-STEP MEthod
STEP 1: Make the Dough
1. Brown the butter in a light-coloured pan until it foams, then turns golden and smells nutty. Tip it into a bowl straight away so it stops cooking, and cool it completely, about 20 to 30 minutes at room temperature, or 10 to 15 in the fridge.
2. Beat the cooled butter with both sugars for around 2 minutes, until grainy and well combined.
3. Whisk in the egg yolk for a further 2 minutes, until thickened.
4. Switch to a balloon whisk and stir in the sourdough discard by hand. Keep the mixer out of this step, an electric beater develops gluten you don't want in a cookie, trading a tender bite for something closer to bread.
5. Whisk the flour, cocoa, bicarbonate of soda and salt together separately, then fold into the wet mixture just until no dry streaks remain.
6. Fold in the dark chocolate chips.
Step 2: Fold In the Raspberries
1. Toss the frozen raspberries in a little extra flour or cornflour straight from the freezer
2. Fold them through the dough quickly and gently. A few streaks of raspberry running through the dough are fine. Mashed raspberries are not, so stop folding as soon as they're distributed.
Step 3: Scoop and Freeze
1. This dough skips the fridge entirely. Use a large cookie scoop (3 tbsp/45ml) to portion it straight onto a parchment-lined tray, aiming for around 75g per cookie, 8 in total. The dough will be soft. That's expected, not a sign anything's gone wrong, and it's exactly why the next step matters more than usual.
2. Tidy up any scruffy edges with the back of the scoop or a spoon rather than your hands, the warmth from your fingers is enough to start softening the raspberries.
3. Freeze the tray uncovered until completely solid, at least 2 hours. If you're freezing longer than a few hours, transfer the frozen dough balls into an airtight container or freezer bag.
Why This Recipe Skips the Chill
A normal fridge chill gives frozen fruit exactly the time it needs to soften and bleed before the dough's even reached the oven. Skip the chill and go straight from mixing to the freezer, and the raspberries stay frozen and contained the whole way through, right up until the oven's own heat takes over. It's the same fix I use on my white chocolate raspberry version of this cookie, and it works just as well against a darker, cocoa-heavy dough.
STEP 4: Bake and Cool
1. Preheat the oven to 180°C/350°F. Bake straight from frozen, no thawing, for 18-22 minutes. This can happen after a 2-hour freeze or weeks later, the timing doesn't need to be precise, just solid all the way through.
2. If the cookies are too puffy, as soon as they come out of the oven, drop the baking sheets from about 20 cm height onto a kitchen worktop lined with kitchen towels and boards to flatten and depuff them, and make crackly, sinking centres.
3. Cool on the tray for 5-10 minutes before moving to a wire rack.
How to Tell When Dark Chocolate Cookies Are Done
A cocoa-based dough never turns golden the way a pale one does, so forget waiting for a colour change and judge it by texture instead: the top should go from glossy to matte with a light crack across it, the edges should feel set and slightly firm rather than soft or jiggly, and the centre should still give a little when pressed without wobbling. Get those three right and the inside bakes up properly fudgy once cooled, whatever colour the outside is.
Tips for Best Results
🧊 Keep the raspberries frozen until the last possible second. Take them out of the freezer, toss them in flour, and fold them in straight away. Every extra minute at room temperature is a minute closer to bleeding.
👀 Trust texture over colour every time. See the section above, this is the one habit worth unlearning if you're used to judging cookies by how brown they've gone.
🔥 Underbaking slightly matters more here than on a pale cookie. Because the usual visual cues are already harder to read on a cocoa dough, it's easy to overcompensate and leave these in too long. Pull them when the edges are set and the centre still gives, even if that feels early.
📏 Weigh the dough for consistent freeze and bake times. A 75g scoop bakes evenly in the 18 to 22 minute window given here. Go noticeably smaller or larger and you'll need to adjust both the freeze time and the bake.
🧂 Add the flaky salt the second they come out of the oven, while the surface still has enough residual warmth to help it stick, not five minutes later once everything's cooled and set.
Substitutions & Variations
Milk or semi-sweet chocolate chips work in place of dark, weight for weight, if you want the whole cookie sweeter.
Active sourdough starter can replace the discard directly, since the rise here comes from bicarbonate of soda rather than fermentation, though discard brings a slightly stronger tang.
A little orange or lemon zest folded in with the dry ingredients works nicely against the dark chocolate if you want a brighter edge.
Chopped hazelnuts, added alongside the chocolate, bring texture without changing the method at all.
Recipe FAQs
Not for this method. Fresh raspberries mash and bleed the moment you fold them into the dough, which is exactly the problem the scoop-and-freeze technique is built to avoid. Frozen raspberries hold their shape through folding and freezing in a way fresh fruit can't.
Yes, swap it in weight for weight. It makes the finished cookie noticeably sweeter, so dark is worth trying first if you want the chocolate and raspberry to stay balanced rather than sugary.
Yes, and this recipe is built around it. Freeze the shaped, unbaked dough balls for up to 3 months and bake straight from frozen whenever you want a fresh batch, no thawing or advance planning needed.
Storage & Make-Ahead
This recipe is genuinely built around the freezer, not just tolerant of it. Freeze the shaped, unbaked dough balls for up to 3 months and bake straight from frozen whenever you want fresh cookies, no thawing and no advance planning required.
Once baked, cookies keep in an airtight container at room temperature for up to 4 days, or in the freezer for up to 3 months. Let frozen baked cookies sit at room temperature for 15 to 20 minutes, or give one 10 to 15 seconds in the microwave, if you want that fresh-baked warmth back.
More Sourdough Cookie Recipes
This one sits alongside my Triple Chocolate Sourdough Cookies and Sourdough Discard Chocolate Chip Cookies in the cocoa and chocolate corner of my sourdough cookie recipes, and if you like your discard bakes rich and fudgy, my Extra Fudgy Sourdough Discard Brownies run on the same underbaking logic covered above.
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Sourdough Chocolate Raspberry Cookies
Equipment
- Light-coloured saucepan, for browning the butter
- Balloon Whisk
- Kitchen scale
- Large cookie scoop, 3 tablespoon / 45ml capacity
- Freezer-safe baking tray
- Wire rack
Ingredients
- 75 g unsalted butter
- 110 g all-purpose flour (plain flour)
- 15 g unsweetened cocoa powder
- ¼ teaspoon baking soda (bicarbonate of soda)
- ¼ teaspoon fine salt
- 75 g granulated sugar
- 70 g light brown sugar packed (or dark brown sugar)
- 1 large egg yolk
- 80 g sourdough discard 100% hydration, unfed
- 100 g dark chocolate chips
- 60 g frozen raspberries
- 1 teaspoon flour or cornstarch for tossing the raspberries
- flaky sea salt for topping (optional)
Instructions
- Brown the butter in a light-coloured saucepan over medium heat until foaming, golden and nutty-smelling. Tip into a bowl immediately to stop it cooking further. Cool completely to room temperature, about 20-30 minutes, or 10-15 minutes in the fridge, stirring occasionally.
- Beat the cooled brown butter with the granulated and brown sugar for about 2 minutes, until grainy and well combined.
- Add the egg yolk and whisk for another 2 minutes, until thickened.
- Whisk in the sourdough discard by hand with a balloon whisk.
- In a separate bowl, whisk together the flour, cocoa powder, bicarbonate of soda and salt. Fold into the wet mixture just until no streaks remain.
- Fold in the dark chocolate chips.
- Toss the frozen raspberries in the extra flour or cornstarch, then fold into the dough quickly and gently, straight from the freezer. Don't overmix, a few streaks of raspberry are fine, mashed raspberries are not.
- The dough will be soft, that's expected. Don't shape by hand. Use a large cookie scoop (3 Tbsp/45ml) to portion directly onto a parchment-lined tray, aiming for roughly 75g per portion, 8 portions total.
- Tidy any portion that needs it with the back of the scoop or a spoon, not your hands.
- Freeze the tray uncovered until solid, at least 2 hours. Transfer to an airtight container or freezer bag if freezing longer than a few hours. Can be baked from a 2-hour freeze or held frozen for weeks.
- Preheat the oven to 180°C/350°F. Bake straight from frozen for 18-22 minutes, in line with the freeze time and portion size used on the white chocolate raspberry cookie. A cocoa dough won't turn golden the way a plain dough does, judge doneness by a matte, slightly cracked top and edges that feel set rather than soft when nudged, not by colour.
- Optional: sprinkle with flaky sea salt as soon as they come out of the oven.
- Cool on the tray for 5-10 minutes before moving to a wire rack.
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