As I stirred the batter for my latest sweet creation, a wave of nostalgia washed over me—images of school lunches and playground laughter filled my mind. These Peanut Butter and Jelly Blondies blend that cherished childhood classic with a modern twist, bringing joy to both young and old alike. This one-bowl recipe is not only quick to whip up in just 30 minutes, but it also offers a comforting texture that’s both chewy and rich, thanks to the melting peanut butter and fruity jelly swirls. For those busy days when you crave a homemade dessert but don’t want to spend hours in the kitchen, this recipe is your go-to solution. Also, if you prefer a gluten-free option, I’ve got you covered! Ready to dive into the magic of these brownies and perhaps even add a creative twist of your own?

Why Are These Blondies So Irresistible?
Quick and Easy: In just 30 minutes, you can whip up these delightful blondies, making them the perfect solution for last-minute dessert cravings.
Comforting Flavors: Reminisce about childhood with each bite, as the combination of rich peanut butter and sweet jelly brings back fond memories of school lunches.
Versatile Mix-Ins: Feel free to customize! Whether you want to add chocolate chips or switch up the jelly flavors, the options are endless.
One-Bowl Wonder: Less cleanup means more time enjoying your delicious creations! This simple recipe minimizes mess without compromising on taste.
Gluten-Free Friendly: With a few effortless substitutions, everyone can enjoy this tasty treat, making it a crowd-pleaser for gatherings.
Serve with Style: For an extra indulgence, pair these blondies with a scoop of ice cream or whipped cream to elevate your dessert game.
Peanut Butter and Jelly Blondies Ingredients
For the Batter
- 1/2 cup butter, melted (1 stick) – Adds richness and moisture; try coconut oil for a dairy-free option.
- 1/4 cup creamy peanut butter, melted – Provides flavor and creaminess; swap with almond butter for a nut alternative.
- 1 cup light brown sugar, packed – Contributes sweetness with a caramel-like flavor; substitute with coconut sugar for a less refined option.
- 1 large egg – Binds ingredients and assists in rising; use a flax egg for a vegan alternative.
- 2 teaspoons vanilla extract – Enhances flavor; opt for pure vanilla extract for the best taste.
- 1 1/4 cups all-purpose flour – Provides structure; swap with a gluten-free flour blend for gluten-free Peanut Butter and Jelly Blondies.
- 1/4 teaspoon salt – Balances sweetness; omit if using salted peanut butter.
For the Topping
- 1/4 to 1/3 cup creamy peanut butter – Adds an extra layer of peanut flavor and richness.
- 1/4 to 1/3 cup jelly (strawberry, grape, raspberry, cherry) – Offers sweetness and fruitiness; adjust flavor based on your preference.
Step‑by‑Step Instructions for Peanut Butter and Jelly Blondies
Step 1: Preheat and Prepare the Pan
Begin by preheating your oven to 350°F (175°C). While it warms, line an 8-by-8-inch baking pan with aluminum foil, allowing the foil to hang over the edges for easy lifting later. Lightly grease the foil with cooking spray or butter to ensure your Peanut Butter and Jelly Blondies release effortlessly after baking.
Step 2: Melt Butter and Peanut Butter
In a microwave-safe bowl, melt 1/2 cup of butter for about 60 seconds until fully liquid. Next, add 1/4 cup of creamy peanut butter to the bowl, and heat it in 30-45 second intervals, stirring until smooth and well combined. This creamy mix will serve as the flavorful base for your blondies.
Step 3: Mix in Sugars and Egg
To the melted butter and peanut butter mixture, stir in 1 cup of light brown sugar until fully blended. Add in a large egg and 2 teaspoons of vanilla extract, mixing until smooth. The mixture should appear glossy and slightly thickened, providing a lovely richness that elevates your Peanut Butter and Jelly Blondies.
Step 4: Incorporate Dry Ingredients
Gently add 1 1/4 cups of all-purpose flour and 1/4 teaspoon of salt to the bowl. Using a spatula, mix until just incorporated; be cautious not to over-mix as this helps maintain the soft texture of your blondies. The batter should be slightly thick and cohesive, ready for the next step.
Step 5: Pour and Smooth the Batter
Carefully pour the blondie batter into the prepared baking pan, using a spatula to spread it evenly to the corners. The surface should be smooth and level, which ensures that your Peanut Butter and Jelly Blondies bake uniformly. This step is crucial for that delightful, chewy texture everyone loves!
Step 6: Add Peanut Butter and Jelly Toppings
Dollop 1/4 to 1/3 cup of creamy peanut butter and 1/4 to 1/3 cup of your favorite jelly over the batter’s surface. Using a knife, gently swirl them into the batter, creating a marbled effect. Take care not to over-mix; you want to see lovely ribbons of peanut butter and jelly throughout your blondies.
Step 7: Bake the Blondies
Place the pan in the preheated oven and bake for 22 to 27 minutes. You’ll know they’re done when the edges pull away from the sides and a toothpick inserted into the center comes out clean with a few moist crumbs. The blondies should be slightly golden and firm around the edges, offering that perfect soft center.
Step 8: Cool and Slice
Once baked, remove the Peanut Butter and Jelly Blondies from the oven and allow them to cool in the pan for at least 45 minutes. This cooling period is essential for achieving clean slices. Afterward, lift them out using the foil, cut into squares, and savor the delightful flavors.

What to Serve with Peanut Butter and Jelly Blondies
Indulging in these delightful blondies is just the beginning—pair them with these delicious accompaniments to elevate your dessert experience!
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Creamy Vanilla Ice Cream: The rich, cold ice cream contrasts the warm blondies beautifully, creating a blissful combination of flavors.
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Fresh Berries: Sweet, juicy strawberries or raspberries add brightness to your dessert plate, balancing the richness of the blondies.
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Whipped Cream: A dollop of fluffy whipped cream makes for a light and airy counterpoint, enhancing the indulgent peanut butter flavor.
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Chocolate Sauce: Drizzling warm chocolate sauce over the blondies brings an extra layer of decadence, perfect for chocolate lovers.
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Coffee or Espresso: The bitterness of a rich coffee or espresso complements the sweetness of the blondies, making it an ideal pairing for a cozy afternoon treat.
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Nutty Granola: Sprinkle some crunchy granola on top for an added textural contrast. The nuts and oats will pair wonderfully with the chewy blondies.
Serve these combinations at your next gathering or cozy night in to create a complete dessert experience that everyone will love!
Expert Tips for Peanut Butter and Jelly Blondies
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Avoid Over-Mixing: Gently mix the batter to maintain a soft and chewy texture; over-mixing can lead to tough blondies you don’t want to serve.
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Check for Doneness: Keep an eye on your blondies in the oven. They’re best when slightly fudgy in the center; a toothpick should come out with a few moist crumbs, not clean.
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Cool Completely: Allow the blondies to cool for at least 45 minutes before slicing. This lets them firm up, making clean, even squares easier to achieve.
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Experiment with Flavors: Don’t hesitate to get creative! Add chocolate chips, or peanut butter swirls, or use different jelly flavors to personalize your Peanut Butter and Jelly Blondies to your taste.
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Storing Leftovers: Place any leftover blondies in an airtight container at room temperature for up to a week, or refrigerate for longer freshness. They can be frozen for up to 3 months, too!
Peanut Butter and Jelly Blondies Variations
Feel free to get creative with your Peanut Butter and Jelly Blondies! Here are some fun ideas to elevate your baking experience.
- Dairy-Free: Substitute butter with coconut oil and use dairy-free chocolate chips for a delightful, creamy twist.
- Nut-Free: Swap out peanut butter for sunflower seed butter to make these blondies suitable for school lunches or nut-free gatherings.
- Gluten-Free: Replace all-purpose flour with a gluten-free flour blend to craft a version everyone can enjoy.
- Chocolate Lovers: Stir in 1 cup of chocolate or butterscotch chips for an indulgent flavor burst that chocolate fans will adore.
- Fruity Swirls: Experiment with various jellies like raspberry or a mix of your favorite fruits for a unique taste that keeps things interesting.
- Crunchy Texture: Toss in chopped nuts or granola for added crunch and bite, providing a delightful contrast to the creamy blondies.
- Spiced Up: Add a dash of cinnamon or vanilla extract to the batter for a warming flavor that complements the peanut butter beautifully.
- Indulgent Topping: Drizzle a rich chocolate or caramel sauce over the top before serving for a decadent finish; it’s the perfect cherry on top!
No matter which variation you choose, your blondies are sure to be a hit. And if you’re looking for more sweet ideas, why not try Malted Peanut Butter or Cream Peanut Butter? Happy baking!
Make Ahead Options
These Peanut Butter and Jelly Blondies are perfect for meal prep, allowing you to enjoy a homemade treat on busy days! You can prepare the batter up to 24 hours in advance; simply mix all the ingredients and store it in an airtight container in the refrigerator. To prevent browning and maintain that just-baked flavor, cover the top tightly. When you’re ready to bake, just pour the chilled batter into the prepared pan, add the peanut butter and jelly swirls on top, and bake as directed. You’ll achieve the same delicious results with minimal fuss on your hectic evenings!
How to Store and Freeze Peanut Butter and Jelly Blondies
Room Temperature: Store covered at room temperature for up to 1 week to maintain the chewy texture and rich flavor.
Fridge: For longer freshness, keep blondies in an airtight container in the refrigerator for up to 2 weeks without compromising taste.
Freezer: Freeze blondies in an airtight container or zip-top bag for up to 3 months. Layer with parchment paper if stacking to prevent sticking.
Reheating: To enjoy warm, simply microwave for about 10-15 seconds or pop them in a preheated oven at 350°F (175°C) for a few minutes.

Peanut Butter and Jelly Blondies Recipe FAQs
How do I select ripe ingredients for Peanut Butter and Jelly Blondies?
Absolutely! When choosing your peanut butter, go for a creamy option without added sugars; it will blend smoothly into the batter. For the jelly, pick a flavor you love—strawberry and raspberry are classics, but don’t hesitate to try grape or cherry! The key is selecting a good-quality jelly that adds sweetness without being overly sugary.
What is the best way to store Peanut Butter and Jelly Blondies?
To keep your blondies fresh, store them in an airtight container at room temperature for up to 1 week. If you are looking for longer storage, pop them in the fridge for up to 2 weeks without sacrificing flavor. Just ensure they’re well-sealed!
Can I freeze Peanut Butter and Jelly Blondies?
Absolutely! For freezing, wrap the blondies in plastic wrap or place them in an airtight container or zip-top bag. They’ll keep well for up to 3 months. If stacking multiple blondies, use parchment paper between layers to prevent sticking. When you’re ready to enjoy them, simply thaw at room temperature overnight.
What should I do if my blondies turn out too dry?
Very! If your blondies are dry, it’s often due to overbaking or not enough moisture in the batter. Keep an eye on them in the oven; you want a few moist crumbs on the toothpick when testing doneness. If that happens, don’t fret! You can serve the blondies with a scoop of ice cream or a drizzle of warm chocolate sauce to add moisture and enhance the flavor.
Are there any dietary considerations for Peanut Butter and Jelly Blondies?
Definitely! If you’re serving these to others, consider potential nut allergies—peanut butter can be substituted with sunflower seed butter for a nut-free version. For vegan dietary needs, replace the egg with a flax egg (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water) to keep this sweet treat accessible for everyone!

Peanut Butter and Jelly Blondies for a Sweet Nostalgic Treat
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and line an 8-by-8-inch baking pan with aluminum foil. Grease lightly.
- Melt 1/2 cup of butter in a microwave-safe bowl for about 60 seconds. Then add 1/4 cup of creamy peanut butter, heating in 30-45 second intervals until smooth.
- Stir in 1 cup of light brown sugar, followed by 1 egg and 2 teaspoons of vanilla extract; mix until smooth and glossy.
- Gently add 1 1/4 cups of flour and 1/4 teaspoon of salt. Mix until just incorporated to maintain the batter's texture.
- Pour the batter into the prepared pan, smoothing it evenly to the corners.
- Dollop 1/4 to 1/3 cup of peanut butter and jelly on top, swirling gently to create a marbled effect.
- Bake for 22 to 27 minutes until edges pull away and a toothpick comes out with moist crumbs.
- Cool in the pan for at least 45 minutes before lifting out to slice into squares.

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