Soft, ultra-chewy, and packed with flavor, these peanut butter blondies will be your new go-to dessert to impress even the biggest peanut butter fanatics. They’re incredibly quick to throw together—a 1-bowl, no-mixer-required, no-dough-chilling recipe. Reese’s Pieces add a wonderful sweet crunch in each bite!
If you’ve poked around my site before, it’s no secret that I adore peanut butter treats. I make peanut butter blossoms year-round (who said they can only be enjoyed as Christmas cookies?), I’ve used these peanut butter cookies as inspiration for 8+ other cookie recipes, and this chocolate peanut butter cake is one of the most decadent beauties to come out of my kitchen.
So it will come as no surprise that my first-ever recipe published on my site in 2011 showcased… peanut butter!
These peanut butter blondies are an ode to the recipe that started it all, a reader and personal favorite that now includes even more Reese’s Pieces. Because who doesn’t love even MORE ways to incorporate peanut butter flavor into every bite?
These Peanut Butter Blondies Are a Forever Favorite:
- Soft & ultra-chewy, and packed with crispy Reese’s Pieces
- Only 1 bowl needed
- No mixer required (just like these soft-baked M&M Cookie Bars)
- Super simple from start to finish. Prepare and bake the blondies in less than an hour. The hardest part is waiting for them to cool!
- A year-round favorite welcome at Halloween parties, summer BBQs, Christmas celebrations, and spring picnics
- Convenient for cutting, stacking, and transporting
Let me show you how easy this is.
You need a 9×13-inch pan, mixing bowl, whisk and spatula, a few staple baking ingredients, plus some Reese’s Pieces candy (or M&Ms). Did I already mention how EASY these are?
Ingredients to Use & Why
Easy 1-Bowl, No-Mixer, No-Chill Recipe
After the thick batter comes together in your mixing bowl, fold in the Reese’s Pieces, spread into your prepared 9×13-inch baking pan, and sprinkle some extra candies on top for good measure. Pop them in the oven and they’re done in half an hour. (Well, except for the hard part… waiting for them to cool.)
The next time you need an easy-to-make crowd-pleasing dessert, or just have a mega peanut butter craving, reach for this recipe.
. It began a delicious career and introduced me to so many sweet readers from around the world. Thank you, from the bottom of my peanut butter-loving heart, for making and trusting my recipes. Whether you’ve been following since the beginning or joined along over the years, thank you for being here. Let me know if you give these blondies a try!
Peanut Butter Blondies Recipe
Ingredients You’ll Need
Instructions
- Preheat the oven to 350°F (177°C). Adjust oven rack to the center rack position. Line the bottom and sides of a 9×13-inch metal or glass baking pan with parchment paper, leaving an overhang on the sides to easily lift the bars out of the pan. Set aside.
- In a large bowl, whisk the melted butter and brown sugar together until combined. Whisk in the peanut butter, then add the eggs, egg yolk, and vanilla. Whisk it all until completely combined.
- Add the flour, baking powder, and salt. Fold the batter together using a rubber spatula. Batter is very thick. Finally, fold in the Reese’s Pieces. Spread evenly into prepared pan and sprinkle with a couple extra Reese’s Pieces on top (for looks), if desired.
- Bake for 30 minutes, then test the blondies with a toothpick. Insert it into the center of the pan. If it comes out with wet batter, the blondies are not done. If there are only a few moist crumbs, the blondies are done. Keep checking every 2 minutes until you have moist crumbs. They taste a little dry if you over-bake!
- Allow the bars to cool completely in the pan set on a wire rack. Once cool, lift the bars out of the pan using the paper overhang on the sides and cut into squares.
- Cover leftover bars and store at room temperature for up to 1 week.
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