Halloween Peanut Butter Blondies Recipe

If you’re on the hunt for a treat that’s as festive as it is delicious, you’re in the right spot. This Halloween Peanut Butter Blondies Recipe is my absolute favorite go-to when I want something gooey, peanut buttery, and packed with fun mix-ins that scream October vibes. I promise, once you try it, you’ll be hooked—not just because it’s a breeze to whip up but because every bite tastes like a cozy fall hug with a playful candy kick.

this Recipe

Ingredients You’ll Need

These ingredients work in harmony to create that classic peanut butter blondie taste with a little Halloween magic mixed in. Use fresh baking powder and make sure your peanut butter is creamy for the best texture.

• Butter: Melted butter adds richness and helps the sugars dissolve nicely, giving you that chewy edge.
• Brown Sugar: The moisture here keeps the blondies soft and caramel-like.
• White Sugar: Balances sweetness and promotes browning.
• Peanut Butter: Creamy type is best for a smooth batter and even flavor distribution.
• Egg Yolk: Adds extra fat, making the treats tender inside.
• Eggs: Provide structure, so your blondies aren’t cakey but hold together beautifully.
• Vanilla: Crucial for depth and that warm, inviting aroma.
• Flour: All-purpose flour works great for the right texture.
• Cornstarch: This secret weapon keeps the blondies soft and chewy, not tough.
• Baking Powder: Gives a gentle lift without puffing them up too much.
• Salt: Enhances all the sweet and nutty flavors.
• Semi-Sweet Chocolate Chips: Melty pockets of chocolate make each bite extra special.
• Peanut Butter Chips: They add a second level of peanut punch and fun texture.
• Reese’s Pieces: Classic candy that brings crunch and bright color.
• Oreos: Chopped for delightful chunks that surprise you.
• Halloween Sprinkles: To top it all off with a festive flair, perfect for parties and kids.

Variations

I love mixing things up depending on who I’m serving and what candy is on hand. You can make this Halloween Peanut Butter Blondies Recipe your own with a few easy tweaks!

• Nut-Free Option: Swap peanut butter for sunflower seed butter if you’re baking for kids with allergies—still delicious but safe.
• Chocolate Lover’s Twist: Add chunks of dark chocolate instead of peanut butter chips for extra richness.
• Spooky Swirl: Drop in some orange food coloring into your batter and swirl cream cheese for a visual Halloween surprise.
• Extra Crunch: Stir in chopped pretzels or roasted peanuts to give these blondies a salty crunch that balances the sweetness perfectly.

How to Make Halloween Peanut Butter Blondies Recipe

Step 1: Mix Melted Butter with Sugars and Peanut Butter

Start by preheating your oven to 350°F (175°C). Get a mixing bowl ready and combine your melted butter with both brown and white sugars. I like to mix this for about a minute to ensure the sugars soften into the butter—that’s how you get the best chewy texture. Then, stir in the peanut butter and the egg yolk. This step makes the batter silky and rich. Your kitchen is probably going to smell amazing at this point—that’s always a good sign!

Step 2: Add Eggs and Vanilla, Then Combine Dry Ingredients

Next, mix in the two whole eggs and your vanilla extract until the batter looks smooth and well incorporated. You don’t want any lumps here—scrape the sides of the bowl to make sure everything is evenly mixed. In a separate bowl, whisk together the flour, cornstarch, baking powder, and salt. Whisking these dry ingredients separately is a small trick I learned—it helps keep the baking powder evenly distributed so your blondies rise perfectly without weird bumps.

Step 3: Combine Wet and Dry, Add Candy Mix-ins

Slowly add the dry ingredients into your wet mixture, stirring gently until just combined. Be careful not to overmix here—overworking the batter can make the blondies tough instead of tender. Once your batter is almost there, fold in the semi-sweet chocolate chips, peanut butter chips, chopped Oreos, and the Reese’s Pieces. Resist the urge to stir for too long; you want those chunks to stay intact for delightful bites.

Step 4: Bake with Halloween Sprinkles on Top

Transfer your batter into a greased and parchment-lined 8×11 or 9×13-inch baking pan. Pat the top down gently and sprinkle a generous handful of Halloween sprinkles evenly over the surface. Those sprinkles not only look incredible but add a subtle crunch that’s so satisfying. Pop the pan into your preheated oven and bake for 25–30 minutes. You’ll know they’re done when the edges are firm but the center still looks slightly soft. Don’t overbake—blondies continue to firm up as they cool, so pulling them out just a little early guarantees that perfect gooey texture I love so much.

How to Serve Halloween Peanut Butter Blondies Recipe

Garnishes

I’m a big fan of adding an extra drizzle of melted chocolate or a sprinkle of flaky sea salt on top if I’m serving these to adults. For kids and parties, I stick with bright Halloween sprinkles—the colors just pop and make the whole presentation festive and fun.

Side Dishes

Pair these with a cold glass of milk or even a scoop of vanilla ice cream if you’re feeling indulgent. For a party spread, I like to serve alongside fresh fruit or a simple cupcake to balance the richness.

Creative Ways to Present

One of my favorite tricks is to cut these into bite-size squares and stick Halloween-themed toothpicks or small flags into each piece for a festive hand-held treat. You could even arrange them layered with whipped cream and candy in a transparent trifle bowl for a fun party centerpiece.

Make Ahead and Storage

Storing Leftovers

I store leftover blondies in an airtight container at room temperature—they stay chewy and fresh for up to five days. Just make sure the container seals well so they don’t dry out.

Freezing

These blondies freeze wonderfully. I slice them first, wrap each piece individually in plastic wrap, then pop them into a freezer-safe bag. When you’re ready, thaw at room temperature or warm them slightly in the microwave.

Reheating

I like to reheat individual blondies in the microwave for about 10-15 seconds to revive their softness and melty chocolate bits—just be careful not to overdo it or they’ll get tough.

FAQs

Final Thoughts

This Halloween Peanut Butter Blondies Recipe has quickly become one of my most-loved seasonal treats—every time I bake it, my family literally goes crazy for the peanut buttery, chocolatey goodness packed with fun candy surprises. Whether you’re baking for a crowd or just want to enjoy a festive indulgence at home, I really think you’ll appreciate how simple and wonderful these turn out. Give it a try and watch your kitchen fill with that perfect balance of cozy and playful—it’s definitely a recipe I recommend sharing with friends and keeping close for every Halloween gathering.

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