This Levain-style masterpiece redefines the classic childhood pairing with a sophisticated, bakery-standard twist. Weighing in as a “heavyweight” 170g bake, this cookie features a dense, salted peanut butter dough that remains soft and fudge-like at the centre while boasting those iconic, craggy golden edges. The secret lies in the beurre noisette, butter browned to a nutty perfection, which adds a layer of toasted complexity that mirrors the deep, roasted notes of the peanuts within.
The true star of the show is the molten raspberry pépin core, a sharp and tart contrast that cuts through the rich, velvety nuttiness of the dough. By utilising professional bread science, specifically a high-protein flour and a meticulous cold-butter technique we achieve the massive height and “gooey” interior synonymous with New York’s most famous bakeries. Every element, from the hand-crushed raw peanuts to the two-stage temperature bake, is engineered for a perfect, pull-apart finish. It is the ultimate nostalgic comfort food, reimagined for the discerning baker.
Ingredients
Raspberry Pépin
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Frozen Raspberries: These provide a bright, acidic punch. Using frozen berries ensures a consistent moisture content and allows the fruit to break down into a vibrant, concentrated sauce.
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Sugar: Beyond sweetness, sugar acts as a preservative and structural agent, helping the jam reach the correct “set” so it stays inside the cookie during the bake.
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Pectin: The essential thickening agent. It reacts with the acid in the raspberries to create a jam that is stable enough to be piped, yet remains molten and “gooey” when reheated.
The Cookie Dough
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Beurre Noisette: Butter browned to perfection to introduce toasted, nutty milk solids. This provides a sophisticated depth that echoes the roasted peanuts.
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Peanut Butter: Adds incredible richness and a soft, “fudgy” fat content. It works with the butter to create a dough that is dense and fatty.
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Light Brown Sugar: High in molasses, this sugar provides moisture and a deep caramel flavour, ensuring the centre of the cookie stays soft.
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Caster Sugar: Helps create the iconic “craggy” golden edges and provides the necessary structure to keep the 180g ball from collapsing.
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Whole Egg: The primary binder. It provides the proteins needed to emulsify the fats and sugars, giving the cookie its “chew.”
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Plain Flour & Bread Flour: A strategic blend. Bread flour (high protein) provides the “heave” and height of a Levain cookie, while plain flour keeps the crumb from becoming too bread-like.
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Cornflour: The “tenderiser.” It softens the flour’s proteins just enough to ensure the cookie remains “melt-in-the-mouth” despite its density.
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Baking Powder & Bicarb: A dual-leavening approach. Bicarbonate of soda helps with browning (Maillard reaction), while baking powder provides the vertical lift needed for that massive height.
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Sea Salt: Essential for cutting through the richness of the peanut butter and enhancing the tartness of the raspberry pépin.
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Roasted Peanuts: These provide the “aggregate” in our dough. They offer a crunch that contrasts with the soft dough and release essential oils during the bake.
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Vanilla Paste: High-quality paste adds floral notes and those beautiful dark specks, rounding out the profile of the brown butter and nuts.
All The Equipment You Need
Storage Tips
Short-Term: Room Temperature
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Shelf Life: 2 to 3 days.
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Method: Once the cookies have completely cooled and the jam core has set, store them in an airtight container or cover the baking tray tightly with cling film. Keeping them at room temperature for up to 72 hours helps the brown butter and peanut oils maintain their soft, fudge-like texture without the firming (starch retrogradation) that happens in the fridge.
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Note: Ensure the cookies are stored in a single layer if possible; the density of the 170g dough can make them fragile if stacked before the sugars and jam have fully “set.”
Mid-Term: Refrigeration
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Shelf Life: 5 to 7 days.
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Method: Wrap the cookies individually in cling film or place them in a high-quality airtight container. This is essential to prevent the high-fat peanut butter dough from absorbing any “fridge odours” and to keep the moisture from the jam core locked in.
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Serving Tip: Refrigeration will cause the fats in the peanut butter and browned butter to firm up, making the cookies feel very dense. For the best experience, always reheat before serving. Microwave for 20 seconds, or warm in a 160°C oven for 5 to 8 minutes until the jam begins to glisten and the centre regains its “gooey” squish.
Long-Term: Freezing
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Shelf Life: Up to 3 months.
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Method: These cookies freeze exceptionally well thanks to the high fat content and dense structure. Ensure the cookies are chilled thoroughly in the fridge first to set the jam and fats. Wrap individual cookies in a double layer of cling film, followed by a layer of heavy-duty aluminium foil to prevent freezer burn.
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Thawing: Thaw at room temperature for 2 hours. To restore the professional “fresh-out-the-oven” texture, reheat in a 160°C oven for 10 minutes. The heat will re-activate the oils in the roasted peanuts and the brown butter, making the cookie fragrant and molten once again.
My Levain Style PB&J Cookie
Ingredients
Equipment
Method
- Place your unsalted butter in a light-coloured saucepan over medium heat. Melt the butter, then continue to cook, whisking constantly. It will foam up, then subside as the water evaporates. Look for golden-brown specks (toasted milk solids) at the bottom and a rich, nutty aroma.
- Immediately pass the butter through a fine mesh sieve into a heat proof bowl and allow to cool until it reaches a soft, "pomade" consistency (not rock hard, but not liquid).
- Into a mixing bowl add sugar and pectin and give it a whisk to distribute the pectin through the sugar, set the bowl a side.
- On a low-medium heat add frozen raspberries into a pan and cook until all the juice have released, raspberries have broken down and juice come to a gentle simmer.
- Once the raspberries have come to a simmer add in the sugar-pectin mixture, stirring the puree simultaneously until the sugar has completely dissolved in. As the mixture comes to a boil continue to cook for 2 minutes, stirring occasionally to avoid any burning.
- Pass half the jam through a fine mesh sieve to remove the seeds and reintroduce it to the other half, mix together and place into a container. Surface wrap with cling film and leave it to set in the fridge for 2 hours.
- Preheat your oven to 180°C. Spread half of your peanuts on a baking tray in a single layer and roast for 8–10 minutes. Watch them closely; you are looking for a deep golden hue and a fragrant, oily sheen. Allow to cool completely. Take the remaining raw peanuts and crush them using the flat side of a chef’s knife. Reserve these to be topped at the final stage.
- Whisk together the dry ingredients: Plain flour, bread flour, cornflour, baking powder, bicarbonate of soda and sea salt. Set aside for later.
- In a stand mixer fitted with a paddle attachment, cream this beurre noisette with the smooth peanut butter, light brown sugar, caster sugar and vanilla paste on low-to-medium speed just until the mixture is smooth and fully emulsified. It is crucial to avoid over-creaming at this stage.Note: Unlike traditional cookies that rely on aeration for lift, we want to limit the incorporation of air to ensure the cookies remain heavy, fudge-like, and "gooey" rather than light or cakey.
- Once the butter and sugars are fully emulsified, incorporate the vanilla bean paste and the eggs one at a time, beating on a low speed until just combined. In two parts add in the dry ingredients on a low speed just until the white streaks disappear, followed by the roasted peanuts.
- Divide your dough into 170g portions and roll them into rough spheres. Transfer your chilled raspberry pepin (jam) into a piping bag, then create a deep crater in the centre of each dough ball. Pipe 25g of the pepin directly into the cavity and carefully pinch the dough to seal it, ensuring you maintain a craggy, rough texture on the surface rather than smoothing it out. Press the base of each ball into your reserved raw crushed peanuts, place them onto a parchment-lined tray, and finish with a generous sprinkle of sea salt. Repeat until all balls are filled, then transfer the tray to the fridge to chill for at least 2 hours
- Preheat your oven to 200°C and bake dough balls directly from the fridge for exactly 5 minutes.After 5 minutes, turn the oven down to 180°C and continue to bake for a further 4-5 minutes. Once finished, allow the cookies to rest on the tray for at least 15–20 minutes to "carry-over" cook and set their structure before moving them. Allow the to cool on a wire rack for 1 hour.
Notes
- The Scent & Sight: When browning your butter, stay vigilant. Once the butter stops sizzling and the foam subsides, the milk solids will turn golden brown within seconds. Immediately transfer it to a cold bowl to halt the cooking process, as residual heat in the pan can quickly turn "nutty" into "burnt."
- The Pomade Texture: Do not use the butter while it is liquid. Chilling it back to a "pomade" (soft ointment) consistency is vital. This state allows the butter to emulsify with the peanut butter and sugars without incorporating the excess air that leads to a cakey, rather than fudgy, cookie.
- Roasting half the peanuts at 180°C for 8–10 minutes is non-negotiable for depth of flavour. It triggers the Maillard reaction, providing a sophisticated smoky note that cuts through the sweetness of the raspberry pepin. While the raw peanuts will roast in the final bake without burning.
- The Rough Texture: When sealing the 25g of raspberry pepin inside the dough balls, resist the urge to roll them into perfectly smooth spheres. A craggy, uneven surface creates those iconic "mountain peaks" that catch the high heat of the oven, resulting in varied textures from crispy ridges to a soft, molten core.
- Density Control: In bread science, over-creaming creates a fragile crumb. By mixing "just until smooth," you keep the fat molecules tightly packed, ensuring these heavyweights hold their height in the oven instead of spreading into flat puddles.
- The Thermal Shock: Starting the bake at 200°C for 5 minutes "shocks" the exterior, setting the crust immediately. This prevents the high-fat peanut butter dough from melting outward.
- The Gentle Finish: Dropping to 180°C for the final 5 minutes allows the heat to penetrate the centre slowly, ensuring the raspberry centre is heated through without over-baking the delicate edges.
- Patience on the Tray: These cookies will look under-baked when they first come out. Do not move them. The "carry-over" heat from the tray finishes the setting process. Moving them too early will cause the structural walls to collapse and the molten jam to leak.