Sometimes, you just want a dessert that feels like a warm hug—sweet, chewy, and a little nostalgic. That’s where peanut butter and jelly-swirled blondies come in, combining the rich, nutty flavor of peanut butter with the sweet, fruity burst of jelly.
This dessert recipe takes a childhood classic and transforms it into a decadent treat that’s perfect for any occasion. And the best part? It’s ridiculously easy to make.
Why These Blondies Are a Must-Try Dessert
Peanut butter and jelly are a legendary duo, but this recipe takes them to a whole new level. These blondies are buttery and chewy with swirls of creamy peanut butter and fruity jelly that create a beautiful marbled effect.
They’re not just a visual delight; each bite is an explosion of flavors—rich, nutty, sweet, and a little tangy.
- Perfect for quick dessert recipes when you’re short on time.
- A great way to use up pantry staples like peanut butter and jelly.
- Can be customized with your favorite nut butter or fruit preserves.
Customizing Your Peanut Butter & Jelly-Swirled Blondies
While this dessert recipe is already a star, you can easily switch things up to match your taste preferences:
- Nut Butter Options: Swap creamy peanut butter with almond butter, cashew butter, or even hazelnut spread for a twist.
- Jelly Choices: Raspberry, strawberry, grape, or even a mixed berry jam will work perfectly.
- Add a Crunch: Sprinkle a handful of crushed peanuts, pretzels, or even chocolate chips on top before baking.
- Make It Gluten-Free: Use a gluten-free all-purpose flour blend.
This flexibility means you can make this dessert your own, whether you want to go classic or try something new.
Easy Steps for the Perfect Blondies Every Time
Making these peanut butter and jelly-swirled blondies is a breeze. You’ll only need a few basic ingredients, and the process is straightforward.
A rich, buttery batter comes together quickly, and the real magic happens when you swirl in the peanut butter and jelly. That marbled effect looks stunning once baked.
Here’s a quick rundown of how it goes:
- Mix the Batter: Melted butter, sugar, eggs, vanilla, and flour create a smooth, golden batter.
- Swirl in the Goodness: Dollop peanut butter and jelly on top of the batter, then use a knife to create beautiful, marbled swirls.
- Bake and Cool: A short bake time is all it takes to turn this batter into chewy, golden blondies.
The result? A dessert recipe that’s both stunning and irresistible.
Storage Tips for Your Blondies
These peanut butter and jelly-swirled blondies store well, making them a great make-ahead dessert. Here’s how to keep them fresh:
- Room Temperature: Store in an airtight container for up to three days.
- Refrigerator: Keep them in an airtight container for up to a week.
- Freezer: Wrap them individually in plastic wrap, then place in a freezer-safe bag. They’ll keep for up to two months.
Just make sure to bring them to room temperature before enjoying—unless you love a chilled, chewy blondie straight from the fridge.
Serving Ideas for Extra Enjoyment
These blondies are perfect on their own, but if you’re looking to take them to the next level:
- Serve warm with a scoop of vanilla ice cream.
- Drizzle a little melted chocolate on top for extra decadence.
- Pair with a glass of milk or a hot cup of coffee for the perfect treat.
This dessert recipe is the kind of sweet treat you’ll want to make over and over again, whether for a quick snack, a party, or just because you’re craving something sweet.
When you’re looking for a dessert recipe that’s as comforting as it is delicious, peanut butter and jelly-swirled blondies are a clear winner.
They’re a reminder of the classic flavor combo we all grew up loving, but with a sophisticated twist that makes them perfect for adults, too.
Peanut Butter & Jelly-Swirled Blondies Dessert Recipe
Equipment
- 8 × 8-inch square baking pan
- Parchment paper
- Silicone spatula
Ingredients
- ½ cup 1 stick unsalted butter, melted
- 1 cup packed light brown sugar
- 1 large egg plus 1 large egg yolk at room temperature
- 1 tablespoon vanilla extract
- 1 cup all-purpose flour
- ¼ teaspoon baking powder
- ½ teaspoon salt
- ¼ cup creamy peanut butter such as Jif, Skippy, or Peter Pan – not natural peanut butter
- ¼ cup fruit jam or preserves of your choice
Instructions
Prepare the Pan:
- Preheat your oven to 350°F.
- Line an 8 × 8-inch square baking pan with parchment paper, ensuring it covers all sides for easy removal.
Mix Wet Ingredients:
- In a large mixing bowl, combine the melted butter and light brown sugar.
- Add the whole egg, extra yolk, and vanilla extract, whisking until smooth and well-blended.
Combine Dry Ingredients:
- Gradually add the flour, baking powder, and salt to the wet mixture.
- Gently fold with a silicone spatula until just combined, avoiding overmixing.
Add Swirls:
- Pour the batter into the prepared pan, spreading it evenly.
- Drop 6 to 8 spoonfuls each of peanut butter and jam over the top of the batter.
- Use a butter knife to create swirls by gently dragging through the peanut butter and jam.
Bake:
- Place the pan in the preheated oven.
- Bake for 25-30 minutes, or until the edges are set, the top is golden, and a knife inserted into the center (avoiding the swirls) comes out clean.
Cool and Serve:
- Let the blondies cool completely in the pan on a wire rack.
- Lift them out using the parchment paper.
- Cut into 9 squares for larger blondies or 18 triangles for smaller portions.
Notes
- For best results, avoid using natural peanut butter, as it may not blend smoothly.
- You can switch the jam flavor based on your preference (strawberry, raspberry, grape, etc.).
- Ensure your eggs are at room temperature for a smoother batter.
Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles. Also an aspiring cook we he researches and tries all kinds of different food recipes and shares what works best.