Peanut Butter and Jelly Blondies

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Peanut butter and jelly never gets old. Especially when it’s baked into bars.

I made these blondies while I was in Aruba but held off on posting them until now because I made them on the heels of these Coconut White Chocolate Chip Blondies and didn’t want to overwhelm anyone with blondies.

Peanut Butter and Jelly Blondies

I tweaked my go-to blondie recipe and the simplicity of melting a stick of butter in the microwave, adding peanut butter, brown sugar, an egg, vanilla, flour and giving it a stir makes this such a fast batter to make.

I like simple one-bowl recipes with batters that are ready to be baked in five minutes almost as much as I like PB&J.

Peanut Butter and Jelly Blondies stacked

Before baking, I added a couple big dollops of peanut butter and jelly to the surface of the batter and marbled it with a knife.

I love swirls. Especially swirls of two of my favorite ingredients mish-mashed together. Just be careful when you’re swirling not to get too carried away or you’ll end up with more muddy-mess than swirly-ness.

Peanut Butter and Jelly Blondies stacked

I used peanut butter twice; both incorporated into the batter and swirled on top so they chock full of peanut butter flavor. If I’m eating a peanut butter cookie or a peanut butter blondie, I want to really have that punch of peanut butter and these do just that.

Because only brown sugar and no granulated sugar is used, not only are they incredibly moist, soft, and dense, but the blondies take on caramel-flavored tones.

I’m also a fan of jelly in every bite. I am never stingy with jelly and the blondies are no exception. The sweet jelly balances the saltier peanut butter perfectly.

Peanut Butter and Jelly Blondie

The recipe is a 30 minute project from start to finish and makes a modest 8-by-8 inch pan so you won’t be forced to consume a huge batch of PB & J.

Although I can think of worse things.

Peanut Butter and Jelly Blondies

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Peanut Butter and Jelly Blondies

Makes an 8-by-8-inch pan, 9 generous squares

1/2 cup butter, melted (1 stick)

1/4 cup creamy peanut butter, melted

1 cup light brown sugar, packed

1 large egg

2 teaspoons vanilla extract

1 1/4 cups all-purpose flour

1/4 teaspoon salt

1/4 to 1/3 cup creamy peanut butter

1/4 to 1/3 cup jelly (strawberry, grape, raspberry, cherry)

Preheat oven to 350F. Line an 8-by-8-inch pan with aluminum foil, spray with cooking spray; set aside.

In a medium microwave-safe bowl, melt the butter, about 60 seconds. To the melted butter, add 1/4 cup peanut butter and heat for 30 to 45 seconds to soften the peanut butter. Stir until  the melted butter-peanut butter mixture is smooth and combined. Add the brown sugar and stir to combine. Add the egg, vanilla, and stir to combine. Add the flour, salt, and stir until just combined, taking care not to over-mix or the blondies will be tough. Pour batter into prepared pan, smoothing it lightly with a spatula or offset knife if necessary.

To the top of the batter, add 1/4 to 1/3 cup peanut butter, dolloped out in 4 or 5 tablespoon-sized mounds. Add 1/4 to 1/3 cup jelly, dolloped out in 4 or 5 tablespoon-sized mounds. Using a knife, marble the peanut butter and jelly in a zig-zag pattern, up and back, back and forth, across the pan until peanut butter and jelly is dispersed and marbled; do not over-do it or surface will look muddy rather than swirled or marbled.

Bake for 22 to 27 minutes, or until edges begin to slightly pull away from sides of pan, center is set and golden, and a toothpick comes out clean; do not overbake. Allow blondies to cool for at least 45 minutes before slicing and serving. Store blondies in an airtight container at room temperature or in the refrigerator for up to 1 week, or in the freezer for up to 3 months.

The blondies are ripe for substitutions and variations. Add about 1 cup of any of the following stirred into the batter: peanut butter, chocolate, butterscotch, or white chocolate chips; toffee bits, fresh or frozen fruit including cherries, blackberries, raspberries, blueberries; diced or whole peanuts, slivered almonds; diced candy such as Peanut Butter Cups, Reese’s Pieces, Peanut M&Ms, Peanut Butter M&Ms or whatever strikes your fancy.

To keep gluten-free, use your favorite gluten-free flour blend.

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Peanut Butter and Jelly Blondies

Peanut Butter and Jelly Blondies

Related recipes:

Chocolate Chip and Cherry Blondies – thanks to many of you who’ve made these and reported back; you can use any fruit, fresh or frozen, including peaches, nectarines, blueberries, strawberries

Chocolate Chip and Cherry Blondies

Coconut White Chocolate Chip Blondies with Chocolate Drizzle

Coconut White Chocolate Chip Blondies with Chocolate Drizzle stacked

White Chocolate Chip Blondies with Chocolate Peanut Butter Frosting – If you don’t like coconut, go for this version rather than the one above

White Chocolate Chip Blondies with Chocolate Peanut Butter Frosting stacked

Strawberry Jelly Rolls – Full of jelly and a sneaky shortcut is used so these are ready from start to finish in under 15 minutes

Strawberry Jelly Rolls

Cinnamon Sugar Crust Cream Cheese and Jelly Danish Squares – They taste like an Entenmann’s-brand danish and are a snap to make

Cinnamon Sugar Crust Cream Cheese and Jelly Danish Squares

Do you like peanut butter? Jelly?

I love them both, big time.

All peanut butter recipes here

All peanut butter and jelly recipes here

The only combo that could possibly trump PB & J is PB & Chocolate.

However, both PB & J and PB & C have their time and place.

Any favorite dessert recipes using either peanut butter or PB & J?

Feel free to link them up.

Have a great week!

About the Author

Welcome to AverieCooks! Here you’ll find fast and easy recipes that taste amazing and are geared for real life. Nothing fussy or complicated, just awesome tasting dishes everyone loves!

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Comments

  1. You can overwhelm me with blondies any day of the week!!! I love them a little too much for my own good. I am also loving that you put a double dose of peanut butter into these fabulous bars. I like to be able to know that I am eating pb in my goodies. And your swirls and photography is perfection!!!

    1. Thanks, Jocelyn for the nice comment and yes, they are full of PB. Nothing worse than a Pb cookie or pb-anything that I think, hmmm…was that REALLY pb in there or just an illusion? No illusion or guesswork, here!

  2. Your bar recipes get me. Every. Single. Time. Since I can’t have one of these rightthisveryminute I’m considering walking downstairs for a spoonful each of peanut butter and jelly. Wouldn’t be the same though…

  3. Oh my gosh, this looks out of this world!!! I would LOVE these! The only issue I would have is I would eat the whole pan!

  4. I’m pretty sure it’s not possible to overwhelm us with blondies. :) I have quite the stockpile of PB right now, I suppose that’d be a good enough excuse to make some PB&J blondies. ;)

  5. These are to die for Averie! And I don’t even like jelly – but I’d inhale these for sure.

  6. I’ve still never tired a blondie. I keep meaning to though. I don’t like brownies b/c of the chocolate, but a blondie? That sounds like a big super soft cookie.

    1. ” I don’t like brownies b/c of the chocolate” <-- are you sure we can still be friends? That statement does not compute! :)

  7. I love peanut butter and jelly, though I like jelly a little better. These blondies look so yummy. I love that you swirled extra peanut butter on top, because like you, I want my peanut butter desserts to actually taste like peanut butter. My favorite peanut butter recipe is the Reese’s Pieces Muffins I made not too long ago and already want to make again: https://piesandplots.net/reeses-pieces-peanut-butter-muffins/ And if you’ve never made this microwave peanut butter fudge using Alton Brown’s recipe, you have to give it a try, I know you would love it, everyone goes totally crazy for it: https://piesandplots.net/microwave-peanut-butter-fudge/

    1. Ive made fudge like that in the micro, yes! It’s so good and so easy! Not that exact recipe & ratios but really any time you combine PB and powdered sugar, you can’t go wrong :)

      And your muffins look great. The tops are so domed and perfect looking!

    1. They’re an easy one to substitute for with GF flour so I think you’ll be totally in business. Keep me posted!

  8. Love all that marbled PB&J and the dense, fudgy look on the inside! I just took a loaf of zucchini banana bread out of the oven–can’t wait for it to cool so I can glaze it with that browned butter cream cheese goodness!!

    1. You made the bread? AWESOME! You will be the fourth person I know of who’s told me she’s made it. LMK how it is and on Mon/Tues I have another recipe that you will love for bread :)

  9. Oh wow, these look yummy and sound so easy. I am not too familiar with the blondies concepts, but all your creations with that name in eat look bedazzling!

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