Thick and Chewy Chocolate Chip Walnut Cookies with Toasted Walnuts

By:

Ruby Bennett

Published:

August 13, 2026

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What Is Chocolate Chip Walnut Cookies?

There is a reason this recipe lives on a stained index card in my kitchen. That first bite always brings the same quiet moment: a crackly, golden edge, the dense, almost fudgy center, and then the surprise of a toasted walnut that still has its crunch.

If you are craving the perfect balance of gooey chocolate, buttery richness, and nutty finish, these Chocolate Chip Walnut Cookies are exactly what you need.

They bake up thick, soft, and chewy inside, with a slight crisp on the outside, and they absolutely deliver melty chocolate in every single bite.

Why You’ll Love This Recipe

These are not your average thin chocolate chip cookies. A few simple baking tricks turn them into bakery style beauties that hold their shape beautifully.

Bakery style thickness. The dough does not flatten and spread into a puddle. Each cookie stays tall, chunky, and full of texture.
Extra chewy centers. Brown sugar, an extra egg yolk, and a careful moisture balance keep the insides soft and tender for days.
Toasted walnuts. Taking five minutes to toast the walnuts deepens their earthy flavor and gives every cookie a warm, nutty crunch that plays perfectly against the sweet chocolate.

Ingredient Breakdown, What Each Ingredient Does

Every ingredient in this recipe has a purpose. When you understand why they are there, you become a more confident baker and it becomes much harder to make a mistake.

Unsalted Butter provides pure richness and lets you control the salt level. The butter must be properly softened so it can cream into the sugars, trapping air and creating a light, fluffy dough that is the foundation of a thick cookie.
Brown Sugar is the secret to chewiness.

Its molasses content holds moisture and gives the cookies that warm, caramelized depth. Granulated Sugar adds classic sweetness and helps the edges set into that crisp, golden ring.
The combination of one whole egg and one extra egg yolk does double duty.

The whole egg binds everything together, while the extra yolk adds fat and silkiness that make the centers luxuriously chewy. Vanilla Extract rounds out all the flavors, making the chocolate taste more chocolatey.
All purpose flour gives the cookies structure without making them tough.

Chocolate Chip Walnut Cookies, Ingredient Breakdown, What Each Ingredient Does

A small amount of cornstarch softens the gluten and keeps the interior of the cookie tender, almost melt in your mouth, while also helping the cookie stay thick.

Baking soda gives the cookies their lift and a touch of browning, and salt sharpens every sweet note.
The semi sweet chocolate chips are a classic choice, offering a rich, bittersweet contrast.

And the star of the show, the toasted walnuts, add an earthy, crunchy finish that makes these cookies unforgettable. An optional sprinkle of flaky sea salt right before baking bridges the sweet, salty, and nutty flavors beautifully.

Step 1: Toast the Walnuts

Start by spreading the walnuts on a baking sheet and toasting them at 350°F for 8 to 10 minutes until they are golden and smell wonderfully fragrant. Let them cool completely before you chop them.

I often toast a double batch because I cannot stop snacking on them while the butter softens. This simple step brings out their natural oils and deepens the flavor in a way that raw walnuts cannot match.

Step 2: Cream the Butter and Sugars

In a large bowl, beat the softened butter, brown sugar, and granulated sugar together until the mixture is light and fluffy. This usually takes about 2 to 3 minutes with an electric mixer. Do not rush this step.

You are beating air into the dough, and that air helps the cookies stay thick and soft instead of collapsing into a flat disc.

Step 3: Add Eggs and Vanilla

Add one large egg and one extra egg yolk to the butter mixture. Beat well after each addition so everything is fully combined. Then stir in the vanilla extract. The extra yolk makes the dough richer and gives the cookies that signature chewy, almost brownie like center.

Step 4: Mix the Dry Ingredients

In a separate bowl, whisk together the all purpose flour, cornstarch, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients, mixing on low speed just until a soft dough forms. Overmixing after the flour goes in can make the cookies tough, so stop as soon as there are no more pale streaks of flour.

Step 5: Add Chocolate and Walnuts

Gently fold in the semi sweet chocolate chips and the cooled, chopped toasted walnuts. Make sure they are distributed evenly throughout the dough so nobody gets left with a cookie missing the good stuff.

I like to press a few extra chocolate chips and walnut pieces onto the outside of each dough ball before baking, it makes them look like they came straight from a bakery case.

Step 6: Scoop and Chill

Use a large cookie scoop to portion the dough into balls. Each scoop should hold about 3 tablespoons of dough. Place them on a plate or small tray and refrigerate for at least 30 minutes.

Chilling solidifies the butter and gives the flour time to hydrate, which means the cookies will spread less in the oven and the flavor will be deeper and more complex.

Step 7: Bake

Preheat your oven to 350°F and line your baking sheets with parchment paper. Arrange 6 dough balls per sheet so they have room to puff up without touching.

Bake for 11 to 13 minutes, until the edges are lightly golden and the centers still look slightly underbaked. That tiny bit of jiggle in the middle is exactly what you want, the residual heat from the pan will finish the baking gently while the cookies cool.

Step 8: Cool and Serve

Let the cookies rest on the hot baking sheet for 5 minutes. This short wait helps them set so they do not fall apart when you move them. Then transfer them to a wire rack to cool completely… or just slide one onto a plate and take a bite while the chocolate is still gloriously gooey. Both ways are correct.

Tips for Perfect Chocolate Chip Walnut Cookies

A few small habits make a huge difference.

Don’t skip toasting the walnuts. It takes a few minutes and completely changes the cookie’s flavor profile, pulling out the nuts’ natural oils and warmth.
Use a mix of chocolate chips and chunks. The variation in size creates little pockets and puddles of melty chocolate throughout the cookie.
Chill the dough. Even a 30 minute rest helps the cookies stay thick, chewy, and more intensely flavored. If you have the time, an overnight chill is even better.
Add a pinch of flaky sea salt right before the tray goes into the oven. It highlights the chocolate and cuts through the sweetness beautifully.
Do not overbake. Pull the cookies when the edges are set and the centers look soft. They will carry over cooking on the hot pan and finish with a perfect chewy middle.

How to Store and Freeze

Room temperature: Keep the baked cookies in an airtight container for up to 5 days. Tuck a slice of soft bread into the container to help them stay moist and chewy.
Freezer for baked cookies: Let the cookies cool completely, then layer them in a sealed freezer safe container.

They will keep well for up to 3 months. Thaw on the counter for about 20 minutes before serving.
Freezing unbaked dough: Scoop the dough into balls and freeze them on a tray until solid.

Transfer the frozen dough balls to a zip top bag and bake straight from frozen. Just add 1 to 2 extra minutes to the bake time and you will have fresh, warm cookies whenever the craving hits.

When to Make These Cookies

I have packed these cookies into little cellophane bags for teacher appreciation gifts, stacked them onto a holiday cookie platter, and set out a warm plate on a rainy Sunday afternoon while my youngest helped pour the milk. They fit every occasion.

Bake them for potlucks, bring a box to a new neighbor, or simply make a batch because Tuesday needs a sweet moment.

They carry the familiar comfort of a classic chocolate chip cookie with the elevated crunch and warmth of toasted walnuts, and that makes them feel both nostalgic and a little bit special every single time.

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FAQs

How do you make chocolate chip walnut cookies thick and chewy?

Use 1 tablespoon cornstarch in the dry ingredients, scoop large portions of dough, chill the dough for at least 30 minutes, and bake at 350°F for 11 to 13 minutes. Remove the cookies when the edges are golden and the centers look slightly underbaked, then let them finish setting on the pan. This keeps the centers soft and chewy while preventing too much spread.

Why do you need to toast walnuts for chocolate chip walnut cookies?

Toasting walnuts at 350°F for 8 to 10 minutes removes surface moisture and deepens their flavor through browning, making them crisper and more savory to balance the sweet dough and chocolate. Cool them completely before chopping so residual heat does not soften the butter or chocolate when you fold them in.

How long should you chill chocolate chip walnut cookie dough?

Chill the scooped dough balls for at least 30 minutes before baking. This solidifies the butter and gives the flour time to absorb moisture, helping the cookies hold their shape and develop a thicker, chewier texture. You can chill overnight for deeper flavor, but let very firm dough sit briefly at room temperature until easy to scoop or slice.

Can you freeze chocolate chip walnut cookie dough?

Yes. Place unbaked dough balls on a tray to freeze, then transfer them to a zip-top bag. Bake them straight from frozen at 350°F, adding 1 to 2 minutes to the bake time. Baked cookies can also be frozen in a sealed container for up to 3 months.

Thick and Chewy Chocolate Chip Walnut Cookies with Toasted Walnuts