As October rolls in, it’s time to embrace the spooky vibes and whip up something delightful! There’s nothing like a batch of Peanut Butter Spider Halloween Cookies to get you in the festive spirit. These cookies aren’t just about great taste; they’re a perfect blend of soft, chewy peanut butter flavor topped with playful Reese’s Peanut Butter Cups to create the illusion of adorable little spiders. One of the best parts? They’re quick to prepare, making them an ideal project for a fun afternoon in the kitchen. Whether you’re hosting a Halloween bash or simply looking to add some festive cheer to your day, these delicious treats are sure to bring smiles all around. Ready to scare away those fast food cravings and dive into a delicious baking adventure?

Why Are These Cookies a Must-Make?
Irresistible Taste: The chewier-than-ever peanut butter base, paired with rich Reese’s Peanut Butter Cups, creates a flavor explosion that everyone will crave.
Festive Fun: Perfectly themed for Halloween, these cookies will not only satisfy your sweet tooth but also add a whimsical touch to any gathering.
Quick and Easy: With simple steps and minimal preparation time, you’ll have these delightful cookies out of the oven in no time!
Versatile Options: Love the idea but not for Halloween? Use the base recipe year-round for traditional peanut butter cookies—find inspiration with our Bake Peanut Butter variations.
Crowd-Pleasing Appeal: Great for parties, school events, or cozy nights in, these cookies will be a hit with kids and adults alike—paired perfectly with a glass of milk or hot cocoa!
Peanut Butter Spider Halloween Cookies Ingredients
For the Cookie Base
- All-Purpose Flour – Provides structure; you can use gluten-free flour for a gluten-free version.
- Baking Soda – Essential leavening agent for that perfect rise.
- Salt – A must for enhancing the flavor and balancing sweetness.
- Unsalted Butter – Adds rich tenderness; ensure it’s at room temperature for easy mixing.
- Light Brown Sugar – Brings moisture and a subtle caramel flavor; dark brown sugar works too if you prefer a deeper taste.
- Granulated Sugar – Sweetens the cookies; all brown sugar will yield even moister results.
- Smooth Peanut Butter – The key flavor component; use creamy for a chewy texture and avoid chunky varieties.
- Egg – Binds ingredients and adds moisture, making every bite delightful.
- Vanilla Extract – A splash adds depth of flavor.
- Whole Milk – Helps adjust dough consistency; can substitute with any non-dairy milk for a vegan version.
For the Decorations
- Miniature Reese’s Peanut Butter Cups – Create the best spider bodies; switch with any chocolate candy if you wish!
- Semi-Sweet Chocolate – Used for piping legs and attaching candy eyes; melt as needed for best results.
- Candy Eyes – These little beauties create the adorable spider faces.
Get ready to bake and create your own spooky Peanut Butter Spider Halloween Cookies that everyone will love!
Step‑by‑Step Instructions for Peanut Butter Spider Halloween Cookies
Step 1: Prepare the Dough
In a large mixing bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt until well combined. In another bowl, cream together ½ cup of unsalted room-temperature butter, ½ cup of light brown sugar, ½ cup of granulated sugar, and 1 cup of smooth peanut butter until fluffy. Add 1 egg, 1 teaspoon of vanilla extract, and 2 tablespoons of whole milk, mixing until smooth. Gradually incorporate the dry ingredients until a soft dough forms.
Step 2: Chill the Dough
Cover the peanut butter cookie dough with plastic wrap or transfer it to an airtight container. Place it in the refrigerator for at least 30 minutes. This crucial chilling step helps firm the dough, preventing it from spreading too much during baking and resulting in perfectly shaped Halloween cookies.
Step 3: Shape & Bake
Preheat your oven to 350°F (175°C) while the dough chills. Once ready, scoop tablespoon-sized portions of the cookie dough and place them 2 inches apart on a parchment-lined baking sheet. Bake in the preheated oven for 10-12 minutes, or until the edges are firm but the centers remain soft. Remove from the oven and let the cookies cool on the sheet for about 5 minutes before transferring them to a wire rack.
Step 4: Add Decorations
Once the cookies are slightly cooled, place a miniature Reese’s Peanut Butter Cup on top of each cookie, pressing it gently into the warm cookies. Allow the cookies to chill in the fridge for a few minutes to firm up the chocolate before proceeding with the decorations.
Step 5: Pipe the Spider Legs
Melt ½ cup of semi-sweet chocolate in a microwave-safe bowl, heating in 20-second intervals until smooth. Using a piping bag or a zip-top bag with the corner clipped, pipe 8 chocolate legs extending from each Reese’s cup to create the spider effect. Be creative and let your imagination run wild!
Step 6: Attach Candy Eyes
While the chocolate is still warm, carefully attach a couple of candy eyes to each Reese’s Peanut Butter Cup to give your spiders their adorable faces. Allow the cookies to sit for a few minutes until the chocolate sets slightly, ensuring the eyes stay in place for the ultimate Halloween presentation.

Make Ahead Options
These Peanut Butter Spider Halloween Cookies are perfect for meal prep, making your Halloween festivities a breeze! You can prepare the cookie dough up to 24 hours in advance by mixing all the ingredients and refrigerating it wrapped tightly in plastic wrap. This chilling not only saves time but also enhances the flavors and maintains the ideal texture. Additionally, you can bake the cookies and store them in an airtight container for up to 3 days, keeping them soft and chewy. When ready to enjoy, simply reheat the cookies in the oven for a few minutes and add your Reese’s and chocolate decorations right before serving. This way, you’ll have delicious treats that are just as festive and delightful!
How to Store and Freeze Peanut Butter Spider Halloween Cookies
Room Temperature: Store cookies in an airtight container at room temperature for up to 1 week, ensuring they remain fresh and chewy.
Fridge: If you’d like to keep them longer, you can store them in the refrigerator for up to 2 weeks, but let them come to room temperature before enjoying them for the best texture.
Freezer: For longer storage, freeze cookies by placing them in a single layer in a freezer-safe container or bag for up to 3 months. Thaw at room temperature before serving.
Reheating: To enjoy a warm cookie treat, reheat in the microwave for about 10-15 seconds, ensuring the chocolate decorations maintain their delightful appearance.
Expert Tips for Peanut Butter Spider Halloween Cookies
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Chill for Best Texture: Refrigerating the dough is essential—skipping this step may lead to flat cookies. Patience pays off!
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Choose Creamy Peanut Butter: Always opt for smooth peanut butter for a perfect chewy texture. Chunky varieties can lead to dry, crumbly results.
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Use a Cookie Scoop: For uniform cookie shapes, use a cookie scoop to portion the dough. This ensures even baking and a professional look.
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Cool Before Decorating: Allow cookies to cool completely before adding Reese’s and decorations. This prevents the chocolate from melting and losing shape.
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Experiment with Toppings: While Reese’s are perfect for spider bodies, feel free to get creative! Use different candies for unique designs and flavors.
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Storage Matters: Keep your cookies in an airtight container at room temperature for up to a week, or freeze them for longer freshness. Enjoy your Peanut Butter Spider Halloween Cookies!
What to Serve with Peanut Butter Spider Halloween Cookies
Indulging in these delightful cookies opens up a world of treat pairings that will enhance your festive experience.
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A Glass of Milk: The classic pair! Cold, creamy milk balances the sweetness of the cookies, making each bite even more delightful.
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Hot Cocoa: Warm and rich, a mug of hot cocoa not only complements the cookies but also adds a cozy touch to your Halloween festivities.
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Apple Slices with Caramel Dip: Crisp apple slices provide a refreshing contrast with the cookies’ sweetness, especially when dipped in rich caramel.
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Pumpkin Spice Latte: Embrace the fall flavors by pairing these cookies with a warm pumpkin spice latte, creating a delightful sweet-and-spicy combo.
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Whipped Cream Topped Coffee: A creamy, caffeinated choice that enhances the chocolate and peanut butter flavors in your cookies while adding a bit of indulgence.
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Ghostly Marshmallow Treats: Light and fun, these treats add another layer of sweetness while keeping the spooky theme alive at your Halloween gathering.
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Nuts and Dried Fruits: A simple bowl of mixed nuts and dried fruits offers a crunchy, healthy snack that balances the decadence of your cookies beautifully.
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Festive Fruit Punch: A vibrant, fruity drink provides a refreshing zing, perfect for offsetting the richness of the cookies.
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Mini Pumpkin Cheesecakes: For an extra special Halloween dessert, serve mini pumpkin cheesecakes alongside these cookies for indulgent layerings of flavor.
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Caramel Popcorn: Light and crunchy caramel popcorn is a fun treat that echoes the sweetness of your cookies, perfect for Halloween movie nights!
Peanut Butter Spider Halloween Cookies Variations
Feel free to personalize these cookies to match your taste and dietary needs while keeping the fun alive!
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Vegan Version: Replace the egg with a flax egg and use plant-based butter and non-dairy milk for a delightful vegan treat. These cookies will still wow everyone, with the same chewy texture you love.
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Gluten-Free Option: Swap the all-purpose flour for a gluten-free baking blend to cater to gluten-free guests. It’ll keep those delicious flavors intact, ensuring no one misses out.
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Nut-Free Delight: Use sun butter or soy nut butter in place of peanut butter for a nut-free alternative. These options provide a similar creamy taste without the allergens.
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Chocolate Lovers: Mix in a cup of chocolate chips to the dough for an extra chocolatey flavor that pairs beautifully with the Reese’s. The combination will take your cookies to an even sweeter level!
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Spicy Twist: Add a pinch of cayenne pepper or cinnamon to the dough to introduce a warm spice, enhancing complexity while still keeping it festive for Halloween. The unexpected heat is a delightful surprise!
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Different Toppings: Instead of Reese’s, using Whoppers or chocolate-covered pretzels can create a unique look while adding a fun crunch. Let your imagination run wild with whatever candies catch your eye.
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Decorative Themes: Change the spider’s design by using melted white chocolate for ghostly spiders or colored chocolate for different festive decorations. The possibilities are endless!
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Classic Peanut Butter Cookies: Love the idea but not feeling the Halloween theme? Stick with the original peanut butter cookie concept and skip the decorations altogether — you’ll still enjoy a classic treat! For more ideas, check out our Texas Roadhouse Butter Chicken Skillet and Cowboy Butter Chicken Linguine recipes that showcase similar stunning flavor profiles.
No matter how you choose to customize, these cookies are bound to be a hit!

Peanut Butter Spider Halloween Cookies Recipe FAQs
What type of peanut butter works best for this recipe?
Absolutely! For the best texture and flavor, I recommend using smooth peanut butter. This will ensure your cookies have the delightful chewy consistency you’re looking for. Chunky peanut butter can lead to dry and crumbly results, which isn’t ideal for these fun Halloween treats.
How should I store the cookies after baking?
To keep your Peanut Butter Spider Halloween Cookies fresh, store them in an airtight container at room temperature for up to a week. If you’d like them to last longer, placing them in the refrigerator will extend their shelf life to about two weeks. Just remember to let them reach room temperature before enjoying for the best texture.
Can I freeze these cookies?
Very! Freezing is a great option. To freeze your cookies, arrange them in a single layer on a baking sheet and flash freeze for about an hour. Once they’re firm, transfer them to a freezer-safe bag or container. They can last up to 3 months in the freezer. When you’re ready to enjoy them, simply thaw them at room temperature or pop them in the microwave for 10-15 seconds for that fresh-baked taste.
Why did my cookies spread too much while baking?
Chilling the dough is crucial to prevent excessive spreading during baking. If you skip this step, your cookies may turn out too flat. Make sure to refrigerate the dough for at least 30 minutes. If you find your dough is still too soft after chilling, you can always add a little bit more flour to help firm it up.
Are these cookies safe for dogs or pets?
No, it’s best to avoid sharing these cookies with pets. The ingredients, especially peanut butter (if it contains xylitol) and chocolate, can be harmful to dogs. Always make sure to treat your furry friends with pet-safe treats instead!
Can I make these cookies gluten-free?
Absolutely! You can easily make Peanut Butter Spider Halloween Cookies gluten-free by substituting regular all-purpose flour with a 1:1 gluten-free baking blend. This way, everyone can enjoy these spooky treats during the Halloween festivities.

Spooky Peanut Butter Spider Halloween Cookies You’ll Love
Ingredients
Equipment
Method
- In a large mixing bowl, whisk together 2 cups of all-purpose flour, 1 teaspoon of baking soda, and ½ teaspoon of salt until well combined. In another bowl, cream together ½ cup of unsalted butter, ½ cup of light brown sugar, ½ cup of granulated sugar, and 1 cup of smooth peanut butter until fluffy. Add 1 egg, 1 teaspoon of vanilla extract, and 2 tablespoons of whole milk, mixing until smooth. Gradually incorporate the dry ingredients until a soft dough forms.
- Cover the cookie dough with plastic wrap or transfer to an airtight container and chill in the refrigerator for at least 30 minutes.
- Preheat your oven to 350°F (175°C). Scoop tablespoon-sized portions of dough and place them 2 inches apart on a parchment-lined baking sheet. Bake for 10-12 minutes. Let them cool on the sheet for about 5 minutes before transferring to a wire rack.
- Place a Reese’s Peanut Butter Cup on top of each cookie, pressing it gently into the warm cookies, then chill for a few minutes.
- Melt ½ cup of semi-sweet chocolate and pipe 8 legs extending from each Reese's cup.
- Attach candy eyes while the chocolate is warm and allow the cookies to sit until the chocolate sets.

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