Dark Chocolate Peanut Butter Chip Cookies – Copycat Levain Bakery Style

Some cookies are delicate. They require gentle handling, careful storage, and a light touch.

This cookie requires none of those things.

This cookie is a brute. A 170 gram tower of dark chocolate dough packed with Reese’s peanut butter baking chips. It does not crumble. It does not shatter. It stands tall on the plate, demanding attention, promising satisfaction.

I have always admired Levain Bakery’s approach to cookies. Massive. Dense. Almost absurdly thick. Their chocolate chip cookie is legendary, but I wanted something different. Something darker. Something that would appeal to the peanut butter and chocolate crowd.

The problem was getting the texture right. Most double chocolate cookies turn out cakey or dry. They spread too much. They lose their height. They taste more like brownies than the dense, fudgy, bakery-style cookie I wanted.

So I went back to my kitchen and changed everything.

No room temperature butter. No prolonged creaming. No extra egg whites. Cold butter straight from the fridge mixes with sugar for barely one minute. An extra egg yolk adds richness without puffiness. Dark cocoa provides deep, intense chocolate flavor. Cornstarch keeps the crumb tender.

Then comes the star: Reese’s peanut butter baking chips. These are not regular chocolate chips. They are formulated specifically for baking, holding their shape while melting into salty sweet pockets of peanut butter goodness. Regular peanut butter cups would work, but the chips are more reliable. They distribute evenly. They do not turn into puddles.

Each cookie weighs 170 grams before baking. Four per batch. The dough stays cold and dense. The oven does the rest.

The first time I pulled these from the oven, I understood why Levain style cookies have such a devoted following. The edges were set and crackled. The centers were still soft, almost underdone. After ten minutes of resting on the hot baking sheet, they transformed into these fudgy, towering discs of dark chocolate and peanut butter.

One cookie is a meal. One cookie is an experience. One cookie will make you forget about every other cookie you have ever eaten.

For More Cookie Recipes, Check out my Copycat Levain Bakery Giant Lemon Cookies – Thick & Soft, Biscoff Chocolate Chip Cookies – Bakery Style, Mini Chocolate Chip Cookies – Bite Sized & Fudgy Double Chocolate Cookies – Soft, Rich & Easy Recipe

How Cold Ingredients Create That Levain-Style Density

This recipe deliberately avoids common cookie techniques. No browning butter. No extended creaming. No room temperature ingredients. Here is why.

Cold Butter, Minimal Creaming

Most recipes tell you to cream butter and sugar until light and fluffy. This one does the opposite:

1. Cold butter mixed for only one minute creates less air in the dough.
2. Less air means denser texture, no fluffiness, just pure fudgy weight.
3. The butter does not have time to warm up, keeping the dough cold for baking.

The Extra Egg Yolk

Adding an extra egg yolk is a small change with a big impact:

1. Yolks add richness and moisture without adding structure (that is what whites do).
2. The result is a cookie that tastes almost like a brownie center.
3. No extra white means no extra puffiness, preserving that dense Levain-style texture.

Dark Cocoa + Cornstarch

These two ingredients work together to create the perfect dense texture:

• Dark cocoa powder has a higher fat content than natural cocoa, adding richness and depth.
• Cornstarch interferes with gluten formation, keeping the cookie tender even though it is dense.
• Together they create a fudgy, almost brownie-like crumb that holds its shape.

Reese’s Peanut Butter Baking Chips

Not all peanut butter chips are created equal. Reese’s makes a specific baking chip for a reason:

• They hold their shape better during baking than chopped peanut butter cups.
• The flavor is concentrated, salty, sweet, intensely peanut buttery.
• They distribute evenly throughout the dough, giving you peanut butter in every bite.
• Chopped Reese’s cups will work but may melt into puddles. The chips are more reliable.

The Doneness Test for Levain Bakery Style Cookies

Bake at 190°C for 15-17 minutes. Look for:

• Edges set and slightly crackled, this is your visual cue.
• Center still looks soft and underdone  that is exactly what you want for a dense, fudgy interior.
• Pull at 15 minutes for a fudgier cookie. Add 1-2 minutes for a more set center.
• If edges burn before the center sets, lower your oven temperature to 180°C next time.

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How to Make Levain Bakery Style Dark Chocolate Peanut Butter Chip Cookies

Ingredients:

For the Cookies:

1. 113 g unsalted butter, cold (½ cup / 1 stick)
2. 100 g light brown sugar (½ cup, packed)
3. 50 g granulated white sugar (¼ cup)
4. 1 large egg, cold
5. 1 large egg yolk, cold
6. 150 g all-purpose flour (1¼ cups, spooned and leveled)
7. 10 g cornstarch (1 Tbsp + 1 tsp)
8. 50 g dark cocoa powder (½ cup scant, sifted if lumpy)
9. 2 g baking soda (½ tsp)
10. 2 g baking powder (½ tsp)
11. 3 g kosher salt (½ tsp) or ¼ tsp fine salt

Mix-Ins & Finish:

1. 200 g Reese’s peanut butter baking chips (~1⅓ cups)

A Step-by-Step Instructions:

Step 1 – Preheat and Prepare

Preheat your oven to 190°C (375°F). Line a baking sheet with parchment paper.

Step 2 – Mix Dry Ingredients

In a medium bowl, whisk together the flour, cornstarch, dark cocoa powder, baking soda, baking powder, and salt. Whisk well to ensure the cocoa is evenly distributed. If your cocoa powder has lumps, sift it first.

Step 3 – Cream Butter and Sugars

Cut the cold butter into cubes. Place in a large mixing bowl with the brown sugar and granulated sugar. Beat with an electric mixer until just combined, about 1 minute. Do not overmix, the goal is a dense cookie, not a fluffy one.

Step 4 – Add Eggs

Add the whole egg and the extra egg yolk. Mix until just combined. The mixture will look thick and cohesive.

Step 5 – Add Dry Ingredients

Add the dry ingredients in two batches, mixing on low speed after each addition. Stop as soon as no dry streaks remain. Do not overmix, overmixing develops gluten and makes the cookies tough instead of tender.

Step 6 – Fold in Reese’s Peanut Butter Chips

Add the Reese’s peanut butter baking chips to the dough. Fold gently with a spatula until evenly distributed.

Step 7 – Portion the Dough

Divide the dough into 4 equal portions of 170g each. Roll each portion into a ball. Do not flatten them. Place the dough balls on a parchment-lined tray.

Step 8 – Bake

Arrange the dough balls on the prepared baking sheet, leaving plenty of space between them (at least 10cm). Bake for 15-17 minutes at 190°C (375°F). Start checking at 15 minutes. The edges should be set, the centers should still look slightly soft.

Step 9 – Cool on the Sheet

Remove the baking sheet from the oven. Let the cookies rest on the hot sheet for 10 full minutes. They will firm up during this time.

Step 10 – Transfer and Enjoy

After 10 minutes, transfer the cookies to a wire rack to cool completely. Or eat one warm that dense, fudgy center is worth the wait.

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Serving, Storage & Flavor Variations

Storing, Refreshing, and Making These Giant Cookies Your Own

Storing Your Levain Bakery Style Dark Chocolate Cookies

• Room temperature: Airtight container for up to 5 days. The cookies stay dense and fudgy.
• Refrigerator: Not recommended. The cold dries them out and dulls the chocolate flavor.
• Freezer (baked): Wrap each cookie individually in plastic wrap, then place in a freezer bag. Freeze for up to 3 months. Thaw at room temperature for 2-3 hours.
• Freezer (unbaked dough): Keep the portioned dough balls in a freezer bag for up to 3 months. Bake from frozen, adding 1-2 minutes to the bake time.

How to Refresh Day Old Dark Chocolate Cookies

• The microwave method (best for fudgy texture): Microwave a cookie for 10-12 seconds. The center becomes warm and almost molten. Do not overheat or the chocolate will seize.
• The oven method (best for crispy edges): Preheat to 300°F (150°C). Warm the cookie for 4-5 minutes. The edges will crisp up while the center stays soft.
• Not recommended: Toasting or air frying. These methods heat unevenly and can burn the dark cocoa.

How to Serve These Giant Cookies

• With cold milk. The classic pairing. Dark chocolate and peanut butter were made for a tall glass of milk.
• With vanilla ice cream. Crumble a warm cookie over a scoop of vanilla. The contrast of hot and cold is unforgettable.
• Slightly warm. Five minutes in a low oven transforms a day-old cookie into something almost fresh.
• As a gift. Wrap one giant cookie in parchment paper and hand it to someone who needs a smile.

4 Flavor Variations for Levain Bakery Style Cookies

1. Triple Chocolate Peanut Butter

Add 50g of dark chocolate chips along with the Reese’s peanut butter baking chips. The extra chocolate makes these even more decadent.

2. Peanut Butter Cup Explosion

Replace the Reese’s baking chips with 200g of chopped miniature Reese’s peanut butter cups. The cups melt into pools of peanut butter and chocolate.

3. Mint Dark Chocolate

Add ½ teaspoon of peppermint extract to the wet ingredients. The mint cuts through the richness and adds a refreshing note.

4. Salted Caramel Dark Chocolate

After baking, drizzle warm salted caramel sauce over each cookie and sprinkle with flaky sea salt. The caramel adds sweetness and the salt enhances everything.

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