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stack of brownie walnut cookies
overhead image of brownie walnut cookies on a black cooling rack

I know what you’re thinking. What’s the point of a brownie… cookie? Why not just have a brownie? Or a cookie? Why both? Well, a pan of traditional brownies has varying textures. You have slightly crisp and chewy edge brownies with softer, fudgier brownies in the center. When you bake brownies as cookies, you get both in 1. A super chewy and textured edge with that beloved fudge center.

Brownie cookies > brownies. (A bold statement!!!!!)

chopped chocolate on a wood cutting board, butter, eggs, and cocoa powder
2 images of pouring melted chocolate into wet ingredients in a glass bowl and chocolate cookie dough with walnuts and chocolate chunks in a glass bowl

This recipe stems from an older recipe on my website: death by chocolate peanut butter chip cookies. I based the recipe off of an America’s Test Kitchen recipe a few years ago. This time, I subbed a little cocoa powder for flour. I found that this teeny tiny increase in cocoa powder gave the brownie cookies an even deeper chocolate flavor (of course). And for that cocoa. Remember the difference between dutch-process vs. natural cocoa powder? Things are pretty important when we use baking soda (BASE) in the recipe as natural cocoa (ACID) reacts with it. However, it’s not that big of a deal when using baking powder (like today) because the recipe doesn’t need that extra acid (from natural). I know it’s confusing. Basically, today, we can use either dutch-process or natural in the brownie cookies.

Cookies are delicious chemistry.

Speaking of chocolate. The base of this recipe is… pure chocolate! Just like we do in peanut butter filled brownie cookies, you’ll start by melting down 8 ounces of the good stuff and mix it right into the dough. So just like how any ordinary cookie recipe begins by creaming butter and sugar together… but we’ll also add melted chocolate. I like to use a quality chocolate from the baking aisle like Ghirardelli or Baker’s. The melted chocolate paired with brown sugar and eggs creates a remarkably moist center. Just want you center-brownie-lovers crave!

“Indulgent” doesn’t even cover it.

“Excessively decadent” is more like it.

brownie walnut cookie dough balls on a baking sheet lined with a silpat baking mat

Because texture clearly rules all, I threw in a generous amount of walnuts. If you have an extra few minutes, give the chopped walnuts a quick toast in the oven for added flavor. Spread chopped walnuts onto a lined baking sheet and bake for about 8 minutes at 300°F (149°C).

overhead image of brownie walnut cookies
brownie walnut cookies on a black plate

More Chocolate Cookies to Try

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overhead image of brownie walnut cookies

Brownie Walnut Chunk Cookies

  • Author: Sally
  • Prep Time: 15 minutes
  • Cook Time: 12 minutes
  • Total Time: 1 hour, 30 minutes
  • Yield: 24 cookies 1x
  • Category: Cookies
  • Method: Baking
  • Cuisine: American

Description

Super fudgy, thick, chewy, and rich brownie cookies with big chunks of chocolate and walnuts!


Ingredients

Scale
  • 2 four ounce bars (226g) semi-sweet chocolate, coarsely chopped
  • 1 cup (125g) all-purpose flour (spoon & leveled)
  • 1/3 cup (27g) natural unsweetened or dutch-process cocoa powder
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1/3 cup (5 Tablespoons; 72g) unsalted butter, softened to room temperature
  • 3/4 cup (150g) packed light brown sugar
  • 1/4 cup (50g) granulated sugar
  • 2 large eggs, at room temperature
  • 1 teaspoon pure vanilla extract
  • 1 cup (125g) chopped walnuts
  • 1/2 cup (90g) semi-sweet chocolate chips

Instructions

  1. Melt the chocolate in a double boiler or use the microwave. Microwave in 20 second increments, stirring after each until completely melted. Set aside to slightly cool (so it doesn’t melt the butter or cook the eggs!).
  2. Whisk the flour, cocoa powder, baking powder, and salt together. Set aside.
  3. In a large bowl using a handheld or stand mixer fitted with a paddle attachment, beat the butter, brown sugar, and granulated sugar together on medium-high speed until smooth and creamy, about 2 minutes. Add the eggs and vanilla extract, and beat on high speed until combined, about 1 minute. Scrape down the sides and up the bottom of the bowl and beat again as needed to combine. Pour in the slightly cooled melted chocolate and mix on medium speed until combined.
  4. On low speed, add the dry ingredients. Turn the mixer up to medium-high speed and beat until combined. Finally, beat in the walnuts and chocolate chips. Cover and chill the dough for at least 45-60 minutes in the refrigerator (and up to 4 days). If chilling for longer than a few hours, allow to sit at room temperature for at least 30 minutes before rolling and baking because the dough will be quite hard.
  5. Preheat oven to 350°F (177°C). Line baking sheets with parchment paper or silicone baking mats.
  6. Roll the dough into balls, about 1.5 Tablespoons of dough each. Place 3 inches apart on the baking sheets and bake for 11-12 minutes or until the edges appear set. The centers will look a little soft.
  7. Remove from the oven and allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely. While the cookies are still warm, I like to press a few more chocolate chips or walnut pieces into the tops– this is only for looks!

Notes

  1. Make Ahead Instructions: Cookies stay fresh covered at room temperature for up to 1 week. You can make the cookie dough and chill it in the refrigerator for up to 4 days. Allow to come to room temperature then continue with step 5. Baked cookies freeze well for up to 3 months. Unbaked cookie dough balls freeze well for up to 3 months. Bake frozen cookie dough balls for an extra minute, no need to thaw. Read my tips and tricks on how to freeze cookie dough.
  2. Special Tools: KitchenAid Stand Mixer | Hershey’s Cocoa Powder | Baker’s Semisweet Chocolate Bars | Silpat Baking Mat | Cookie Sheets | Cooling Rack | Black Plates
  3. Be sure to check out my top 5 cookie baking tips AND these are my 10 must-have cookie baking tools.

Keywords: brownie walnut chunk cookies

overhead image of brownie walnut cookies

Reader Questions and Reviews

  1. Hi Sally,
    So I haven’t made these yet and bought all the ingredients however when I went to gather those ingredients I realized I purchased unsweetened chocolate bars instead of semi-sweet. So any suggestions?
    Thanks Angel

    1. Hi Angel, You can use unsweetened chocolate, but please know that unsweetened chocolate lends a very deep, dark chocolate cookie!

  2. Hi Sally, it has been my nth time attempt to do this and it was always good! But always have the same problem everytime, that is, my cookies are always flat . What usually happens is, by the time I put it in the oven, it looks like it is melting for the first few minutes and ends up flat. This is really frustrating, good thing my bro and kids still loves it no matter what. ☺️ What do you think I did wrong? (By the way, I also tried some of your tips like freezing it longer, forming the cookie dough higher but nothing seems to work with me)

  3. Great tasting cookie but they didn’t really spread at all for me so it seems I have the opposite problem to others.
    Still taste great but I’ll try them again and see if I can get them to look a bit more like a cookie next time instead of a truffle.
    Love your recipes Sally! =)

    1. Thank you for giving these cookies a try, Steph! When cookies aren’t spreading, it usually means that there’s too much dry ingredient (flour) soaking up all the liquid. When measuring flour, use the spoon & level method. Do not scoop the flour out of the container/bag. Doing so leaves you with excess flour in the cookie dough.

  4. Fabulous cookie. I measured my ingredients using a scale and they came out perfect. The only thing is that my butter and sugar did not cream; I ran the stand mixer for probably 3-4 minutes. Odd.

  5. I love this recipe just waiting to bake it asap, could you please let me know how can I replace eggs in this recipe for a egg free version ?

    1. Hi Nik, we haven’t tried an egg-free version of this recipe, but let us know if you give anything a try.

    2. Hi Nik, We haven’t tested this recipe with egg substitutes, so can’t give any advice. Let us know if you try any! Here are all of our egg free baking recipes if you are interested in browsing there.

  6. I also used a scale to measure all the ingredients, and these came out great! My butter and sugar also didn’t cream. That didn’t seem to change the results though. Thanks for the recipe!

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