Peanut Butter Chocolate Chunk Cookie Bars – All the flavor and texture of peanut butter-chocolate cookies, but much faster and easier. The batter comes together in minutes by hand and in one bowl. In under 30 minutes, from start to finish, you can be eating one of these bars.
Sometimes I think there’s no new way to combine peanut butter and chocolate.
But then I put my thinking cap on and something always comes to me.
I was craving something dense, thick, peanut buttery and chocolaty, and very easy. I wasn’t in the mood for stand mixers and dough chilling. I wanted something fast and not fussy in the least. Sometimes I can handle tedious baking projects and other times, I have the patience of a flea.
I planned to use browned butter in the batter and finish them with a melted peanut butter-chocolate chip drizzle, but kept them pretty bare bones and am so glad I did. The peanut butter flavor comes through, and the glorious hunks and chunks of dark chocolate shine in every bite.
They’re made in one bowl, no mixer required, and the batter comes together by hand in five minutes. After a short 20 minute stint in the oven, you can be enjoying big chewy bites. I love recipes that don’t require hours of advance planning and that go from cupboard shelves and into my belly in under 30 minutes flat.
They combine many favorite recipes into one. They remind me of a pan-full of peanut butter-spiked Browned Butter Chocolate Chip Cookie Cups. As an aside, if you’re prone to cookies that spread, it’s impossible with those because they’re baked in muffin cups.
I love the soft, fudgy density of Peanut Butter and Jelly Blondies and this recipe is reminiscent of those, but because I used a pinch of baking soda and slightly more flour, they have more of a cookie-bar than a blondie texture. And, they’re loaded with chocolate chunks like my favorite Peanut Butter and Chocolate Chunk Cookies.
To make them, melt the butter, about 1 minute in the microwave. Stir in an egg, sugars, vanilla, a hearty scoop of peanut butter, and the dry ingredients. After the batter comes together, fold in chopped dark chocolate. I used Trader Joe’s Dark Chocolate Pound Plus Bar. I love their Pound Plus Bars for baking and the 72% and the Dark Chocolate are my two favorites.
A tip when chopping chocolate is to put a piece of parchment paper on your cutting board before chopping. It makes it so easy to pick up and dump the whole shredded mess into your mixing bowl. Chocolate isn’t able to cling to the cutting board, making cleanup much easier. I chop many batches of chocolate on the same piece of parchment and tuck it inside the wrapper of my leftover chocolate bar for next time. I hate to waste, even paper.
After the chocolate is folded in, transfer batter to the pan, and bake for about 20 minutes. Don’t overbake because the bars will set up in the pan as they cool. A toothpick test may or may not work because there’s so much chocolate in them and I had to insert a toothpick in four different spots until I stopped hitting chocolate and struck dough. Not a horrible problem to have.
They have all the benefits and taste of Peanut Butter Chocolate Chunk Cookies, but faster and easier. I love pans of bars because there’s no dough to chill or form into individual mounds. No mixer dishes to do, and nothing can accidentally spread out all over a cookie sheet since it’s baked a pan.
The flavor of peanut butter is distinct and present but not overwhelming and doesn’t overshadow the buttery, sweet dough. The edges raised up and puffed a bit while baking and turned chewy, yet the interior remained dense, tender, moist, and soft.
The chocolate chunks are beautiful surprises that you can sink your teeth into in every bite.
There are so many ways to doctor these up, from using browned butter rather than melted, or adding white, butterscotch or peanut butter chips. Sprinkle in a handful of marshmallows, M&Ms, or a favorite candy. The dough is ripe for add-ins.
Before serving, drizzle with chocolate, melted peanut butter or melted chocolate peanut butter. After the photos, I drizzled some Dark Rum Caramel Sauce over the top on a whim. Oh my, highly recommended and if only I gotten a picture. You’ll have to use your imagination or just make some for yourself.
Those center cut bites are my favorite. Under-baked, gooey, rich, and flanked with hunks of dark chocolate.
Even after writing a cookbook with 100 Peanut Butter Recipes I don’t think I’ll ever run out of ways to combine peanut butter and chocolate.
They’re my favorite food groups.
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Peanut Butter Chocolate Chunk Cookie Bars
Ingredients
- ยฝ cup unsalted butter, melted (1 stick)
- 1 large egg
- ยพ cup light brown sugar, packed
- ยผ cup granulated sugar
- 1 tablespoon vanilla extract
- ยฝ cup creamy peanut butter heaping, like Jif or Skippy, do not use homemade
- 1 ยผ cups all purpose flour
- ยฝ teaspoon baking soda
- pinch salt, optional and to taste
- 6 ยฝ ounces dark or semi-sweet chocolate, roughly chopped (I used Trader Joe's Dark Chocolate Pound Plus Bar, 54%)
Instructions
- Preheat oven to 350F. Line an 8-by-8-inch baking pan with aluminum foil, spray with cooking spray; set aside.
- In a large microwave-safe bowl, melt the butter, about 1 minute. Allow the butter to cool momentarily so you don't scramble the egg. Add the egg, sugars, vanilla, and stir vigorously to combine, for about 1 minute. Stir in the peanut butter. Add the flour, baking soda, optional salt and stir until just incorporated. Stir in chocolate. Turn batter out into prepared pan, smoothing it lightly with a spatula. Bake for 18 to 22 minutes, or until center is just set and golden (a toothpick test should come out clean if you hit dough but because of the abundance of chocolate, hitting chocolate is more likely). Bars will firm up more in pan as they cool.
- Allow bars to cool in pan for at least 30 minutes before slicing and serving. Store extra bars in an airtight container at room temperature for up to 1 week, or in the freezer for up to 3 months.
- Bars may be kept gluten-free by replacing the flour with your favorite gluten-free baking blend.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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Thanks for the Barre Real Food Bars Giveaway entries
Do you think it would work if I double the recipe and put it in a 13×8 pan? Would I need to adjust the baking time at all? I’ve made these before and everyone loved them! Thanks!
Fine to do just as you want. You may need to extend baking time a few mins, maybe not – just keep an eye on them and bake until they’re done. Glad you love these!!
Made these tonight with half brown butter, half melted butter, and two heaping handfuls of semi-sweet chocolate chips. Now, I’m nursing a stomachache from sneaking so many bites of the squares!
Great recipe again, Averie! :)
So glad you love them – and that you made them with half/half melted/browned butter. Sounds wonderful – almost good enough to get a tummy ache over :)
Hi, Averie! I’m a first-time commenter on your blog, but a longtime admirer : ) I recently entered the food blogging world and when I saw this recipe, I knew I had to try it out! I think I used a bit too much flour this time around, but I’m sure that next time, they’ll be perfect! Thanks for the great recipes and beautiful photos!
https://foodieandfabulous.blogspot.com/2013/04/peanut-butter-chocolate-chunk-cookie.html#more
Hi Esther! Thanks for trying the recipe. I took a peek at your pics. I think baking by a couple minutes less; adding a nice HEAPING half-cup of PB (an extra dollop from what you used); reducing the flour slightly – any of those things or a combination of them, would combat any sort of dryness issues but they look pretty darn wonderful to me :)
Made these last night and they are SO.DARN.GOOD. I had a fleeting thought that I should have cooked longer (they were extra gooey!) and that there was maybe too much chocolate (WHAT?!), but I was just too impatient to let them cool long enough to firm up! Can you blame me? Turns out they are a fantastic breakfast bar, too! ;)
So glad to hear that you made these and are loving them! They do make a good breakfast or snack bar…choc & PB never fails there :) And sounds like you cooked them the perfect amount of time if you’re super pleased with them!
Oh, Averie–I love having your blog to come back to after a long vacation! These look absolutely divine–PB&chocolate are my favorite combo when baked into something like this (and maybe even smothered in jelly or cookie butter)!
Well welcome back! :)
By the time I scrolled through to this point of the page…I’ve started drooling! :D They all look so good…I can’t decide where to start! Great photos too!