We had a few rainy days in Cleveland last week, and B was busy, which meant that I was trying to find ways to entertain 3 (!) kids inside our house. One of the things that we all love to do – well, except for GM, but we’ll find out about that soon enough! – is bake. And luckily, I’d been dreaming up these bars for a while, so when we had one rainy day and I asked the kids if they wanted to bake (and they said yes!), I knew exactly what we’d make.
I love the combination of chocolate and peanut butter. Especially when there’s not TOO much chocolate involved. Which is probably why I love Reese’s peanut butter cups and pieces. Thus, this recipe.
This recipe uses my standard blondie recipe, plus a few additional add-ins to make it perfect for peanut butter lovers! If you wanted to use a peanut butter cookie base, you could make this EXTRA peanut buttery! But this is perfect if you want a chocolate chip cookie with some added peanut butter candy.

Peanut Butter Lovers Blondies
Here’s what you need:
- 1 c unsalted butter, room temperature
- 3/4 c granulated sugar
- 3/4 c packed brown sugar
- 1 tsp vanilla extract
- 2 large eggs, room temperature
- 2 1/4 cups all-purpose flour
- 1 tsp baking soda
- 1 tsp salt
- 2 cups of mix-ins — I like to do 1/2 cup peanut butter chips, 1/2 cup chocolate chips and 1 cup Reese’s Pieces. You could also do chopped up peanut butter cups!
- 15 full-sized peanut butter cups
- Optional: an additional 1/3 cup Reese’s pieces
- Optional: melted chocolate and peanut butter candy for drizzling over the top
Here’s what you do:
- Preheat the oven to 375. Line a 9×13 pan with parchment paper (alternatively, you could also just spray with a nonstick spray or grease with butter).
- In a larger mixing bowl, cream together sugars and butter until well-blended.
- Add in eggs and vanilla, and mix well.
- Slowly add in the remaining dry ingredients – the flour, baking soda and salt. Don’t overmix, blend until just mixed together.
- Add in your mix-ins! For me this included the chocolate chips, peanut butter chips and Reese’s Pieces.
- Spread into prepared pan.
- Top with 15 peanut butter cups. I like to spread them evenly across the pan, horizontally in 3 rows of 5, so each cookie has one peanut butter cup (see photo).
- Sprinkle with 1/3 cup Reese’s pieces in between peanut butter cups.
- Bake for 23-27 minutes until top is golden brown and a toothpick into the bars comes out clean.
- Optional: drizzle with melted chocolate and peanut butter candy (I melted some leftover peanut butter baking chips with peanut butter in the microwave and drizzled that)
- Cool completely and cut into 15 bars. Enjoy!

These look incredible!! Thank you so much for sharing the recipe, Melissa! I feel like they’d be a great fall/festive treat with the colors too!
omg. These look amazing. I can’t make them, but sending them to someone who can