Butterfinger Crumbl Cookie Recipe: Peanut Butter Swirls and Chocolate Chunks in Every Bite

This Butterfinger Crumbl cookie recipe delivers the perfect balance of peanut butter swirls and chocolate chunks in every bite—just like your favorite bakery version. 🔥 The secret lies in the dough's texture, where crispy edges meet chewy centers, all wrapped in that signature crumbl flavor.

I've baked these dozens of times, and this version never fails to impress, whether you're serving them at a party or enjoying them solo.

The magic starts with the dough, which needs to chill for 30 minutes before baking to prevent spreading and ensure that signature crumbl texture. While the base is simple—flour, butter, sugar, and eggs—the real flavor comes from the Butterfinger pieces and peanut butter swirls folded into the dough.

These create pockets of gooey, chocolatey goodness that make each cookie irresistible.

By the time they emerge from the oven, you'll have golden-brown cookies with crisp edges and soft, chewy centers, all studded with chunks of Butterfinger and swirls of peanut butter.

The aroma alone will have everyone gathering around the kitchen, and the first bite delivers that perfect mix of textures and flavors you crave. These cookies stay fresh for days, making them ideal for meal prep or gifting.

Ready to bake a batch that rivals your favorite bakery? Let’s get started with the foolproof steps that guarantee restaurant-quality results every time.

Ingredients for butterfinger crumbl cookie

Peanut butter swirls and Butterfinger chunks make these cookies irresistible—just like your favorite bakery version.

The Butterfinger pieces are the star here, so grab a bag of the classic bars—not the mini ones. Trader Joe's and Walmart usually have them in bulk, and the full-size bars chop easier. I always use Nestle Butterfinger because it's the most widely available. For the peanut butter, stick with natural, unsweetened—Jif or Skippy work perfectly. The dough needs to chill for 30 minutes, so plan ahead. Cold butter is key for that signature crumbl texture, so don’t skip cubing it before mixing.

No Butterfinger? Reese's Pieces or Heath bars work in a pinch, but the flavor won’t be the same. Running low on peanut butter? Sunflower seed butter is a great substitute, though it has a different taste. Short on chocolate chips? Chop up a chocolate bar—just make sure it’s at least 60% cocoa for the best flavor. The peanut butter swirl is non-negotiable though—it’s what makes these cookies special. If you’re feeling fancy, add a pinch of cinnamon to the dough for extra warmth.

These cookies stay fresh for 5-6 days in an airtight container at room temperature, but they’re best enjoyed within 2 days for maximum crunch. For longer storage, freeze the dough balls before baking—just add 1-2 minutes to the bake time when thawed. I like to portion the dough into 1.5 oz balls before chilling, so they’re ready to bake whenever you are. The aroma alone will have your kitchen smelling like a bakery, so save some for yourself!

Step-by-step instructions for Butterfinger crumbl cookies

Here's how to bake these decadent cookies with gooey swirls and crunchy candy chunks.

In a large mixing bowl, whisk together the 4 cups all-purpose flour, 1 tsp baking soda, and 0.5 tsp salt. Set aside. In a separate bowl, combine the 1.5 cups granulated sugar and 0.5 cup packed brown sugar. Cut in the 1 cup cold cubed unsalted butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs with pea-sized butter pieces.

This cold butter technique creates those signature crumbly pockets in the cookies. Don't overwork the mixture—just until the butter is evenly distributed. If you see any large butter clumps, break them down with your fingers. The texture should be sandy and crumbly, not pasty.

In a separate bowl, beat the 2 whole large eggs at room temperature until just combined. Add 2 tsp vanilla extract and mix well. Gradually add this egg mixture to the dry ingredients while mixing on low speed until just combined. Fold in the 1 cup peanut butter and 1.5 cups semisweet chocolate chips using a spatula.

Here's where the magic happens—don't overmix after adding the chocolate chips. You want to preserve those pockets of air and butter that create the signature crumbly texture. If the dough looks too dry, add 1 tablespoon of milk (not in ingredients list, but you can use reserved egg wash if needed).

In a small bowl, mix together the 0.5 cup peanut butter (for swirl) and 0.25 cup granulated sugar (for swirl) until smooth. Take ½ cup of this peanut butter mixture and set it aside. Roll the remaining peanut butter mixture into a log about 2 inches in diameter and wrap it tightly in plastic wrap. Chill in the refrigerator for 30 minutes while you prep the main dough.

This chilled peanut butter log will hold its shape better when you roll it through the main dough. The sugar helps create a gooey center in the swirls. Don't skip the chilling—it makes all the difference in getting clean, defined swirls in your cookies.

Preheat your oven to 350°F and line two baking sheets with parchment paper. Divide the main dough into 24 equal portions (about 2 tablespoons each) and roll each into a ball. Place on the prepared baking sheets about 2 inches apart. Make an indentation in the center of each ball with your thumb.

Remove the chilled peanut butter log from the refrigerator and unwrap it. Press the reserved ½ cup peanut butter mixture into the center of each indentation. Then, gently roll the peanut butter log through the indentation, creating a swirl pattern. Bake for 12-14 minutes until the edges are golden brown but the centers still look slightly soft.

Remove the cookies from the oven and immediately press 2-3 chunks of chopped Butterfinger candy bars into the top of each cookie. Return to the oven for 1-2 minutes just to soften the candy slightly. Let the cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

This final step is crucial—the warm cookies help the Butterfinger chunks melt slightly into the cookie, creating that perfect crunchy-gooey contrast. Serve warm for maximum enjoyment, with a glass of cold milk to balance the rich peanut butter and chocolate flavors.

Pro cooking tips for perfect results

Cold Butter Technique

The secret to that signature crumbl texture starts with cold cubed butter cut into your dry ingredients. Use a pastry cutter or your fingers to distribute the butter in pea-sized pieces—never melt it first.

I like to freeze my butter for 15 minutes before cubing to ensure it stays firm. This creates those delicious pockets of butter that melt into crispy edges while keeping the centers chewy. 🧈

Peanut Butter Swirl Mastery

For perfect swirls, chill your peanut butter log for the full 30 minutes—no shortcuts! Use a 2-inch diameter log and wrap it tightly in plastic to prevent sticking. When rolling through the dough, apply gentle pressure so the swirl stays centered.

I find a bench scraper helps create clean lines. The sugar in the swirl mixture keeps it gooey while baking, so don't skip it.

Even Baking Trays

Rotate your baking sheets halfway through the 12-14 minute bake for even browning. I use perforated baking sheets to allow air circulation, which prevents soggy centers. Test doneness by pressing gently—the edges should be golden while the centers remain soft.

Overbaking ruins the texture, so watch closely during the last 2 minutes.

Butterfinger Placement

Press the Butterfinger chunks into the warm cookies immediately after baking—they'll soften slightly and create that perfect crunchy-gooey contrast. Use 2-3 chunks per cookie (about 1 tsp chopped per cookie) for balanced flavor.

For extra decadence, press them in while the cookies are still on the baking sheet, then return to the oven for 1-2 minutes to melt the edges.

Oven Temperature Tips

Preheat your oven for at least 15 minutes before baking to ensure consistent results. I recommend using an oven thermometer—many home ovens run 25°F hotter or colder than set.

If your cookies spread too much, reduce the temperature to 325°F next time. For extra crisp edges, bake on the middle rack where heat circulates best.

Dough Chilling Secret

Never skip chilling the dough balls for 30 minutes before baking. This prevents excessive spreading and helps maintain that signature crumbl texture. I portion my dough using a 2-tablespoon cookie scoop for consistent sizes.

Place the dough balls on a parchment-lined tray in the fridge while you prep the peanut butter swirls—it saves time and keeps everything organized. ❄️

Frequently asked questions