Reese’s Pieces Peanut Butter Cookie Bars

Reese’s Pieces Peanut Butter Cookie Bars

If you’re a peanut butter dessert lover than these cookie bars are for you! These Reese’s Pieces Peanut Butter Cookie Bars are amazing! They have the perfect chewy texture, an incredible peanut butter flavour, and loaded with mini Reese’s Pieces.

Best of all they are so easy to make! I made them with the help of my two toddlers recently. I used to be nervous baking with peanut butter around my toddlers. Most of the time I ended up with peanut butter all over my cupboards and floor. They are starting to get much better with keeping their fingers out of the bowl. They also really love the mini Reese’s Pieces! I had to put some in a separate bowl for them so they would stop picking it off the top of the cookie dough.

Difference Between Cookies and Cookie Bars?

The difference between cookies and cookie bars is not only the obvious shape difference but texture. Cookie bars are chewier. Since most of the bars do not have an edge and are thicker than cookies the texture is more fudgy.

Reese's Pieces Peanut Butter Cookie Bars

How to Make Reese’s Pieces Peanut Butter Cookie Bars

Start by preheating your oven to 350 F and line a 9×13 inch baking pan with parchment paper. It is important to line the pan with parchment paper rather than butter for two reasons. The first is that using butter/oil will give these bars a greasy bottom. Secondly, using parchment paper allows you to easily lift the bars out of the pan to make cutting them easier.

In a large bowl or stand mixer beat butter, white sugar, and brown sugar until light and fluffy (usually takes 2-3 minutes). Add in peanut butter and mix until ingredients are well combined. Mix in eggs and vanilla.

In a separate medium sized bowl whisk together flour, baking soda, and salt. Add the dry ingredients to the wet and mix just until no flour streaks remain. Fold in the mini Reese’s Pieces but keep about 1/4 cup aside to place on top of the cookie dough once in the pan.

Reese’s Pieces Peanut Butter Cookie Bars dough

Add the dough into the baking pan and use a rubber spatula to evenly spread it. Sprinkle the reaming Reese’s Pieces on top of the dough.

Reese’s Pieces Peanut Butter Cookie Bars dough in a pan

Cover pan with aluminum foil and bake for 15 minutes. After 15 minutes remove the foil and bake for an additional 20 minutes or until edges are a golden brown and middle is set. Allow the cookie bars to fully cool in the pan before cutting.

Bake them on your own or bake them with your kids, either way I’m sure you’ll love with these Reese’s Pieces Peanut Butter Cookie Bars!

If you make these bars you can tag me on Instagram @jessiebakestreats and leave me a review below. I’d love to hear from you!

For more ideas you can follow me on Pinterest.

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Reese’s Pieces Peanut Butter Cookie Bars

Jessie M
The ultimate peanut butter cookie bars. Chewy, sweet, and loaded with delicious mini Reese's Pieces. This easy to do recipe is perfect for the peanut butter lover!
Prep Time 15 mins
Cook Time 35 mins
Servings 24 bars

Equipment

  • 9×13 inch baking pan

Ingredients
  

  • 1 C salted butter at room temperature
  • 1 C brown sugar
  • 3/4 C white sugar
  • 1 C smooth peanut butter
  • 2 large eggs
  • 1 & 1/2 tsp vanilla extract
  • 2 & 1/2 C all purpose flour
  • 2 tsp baking soda
  • 1/4 tsp salt
  • 1 bag mini Reese's Pieces can be found in the baking isle of the grocery store. Equal to about 1 & 1/2 cups

Instructions
 

  • Preheat oven to 350 F and line a 9×13 inch baking pan with parchment paper.
  • In a large bowl or stand mixer beat butter, white sugar, and brown sugar until light and fluffy (usually takes 2-3 minutes).
  • Add in peanut butter and mix until ingredients are well combined.
  • Mix in eggs and vanilla.
  • In a separate medium sized bowl whisk together flour, baking soda, and salt.
  • Add the dry ingredients to the wet and mix just until no flour streaks remain.
  • Fold in the mini Reese's Pieces but keep about 1/4 cup aside to place on top of the cookie dough once in the pan.
  • Add the dough into the baking pan and use a rubber spatula to evenly spread it.
  • Sprinkle the reaming Reese's Pieces on top of the dough.
  • Cover pan with aluminum foil and bake for 15 minutes. After 15 minutes remove the foil and bake for an additional 20 minutes or until edges are a golden brown and middle is set.
  • Allow the cookie bars to fully cool in the pan before cutting.
  • Enjoy!

Notes

Store in an airtight container up to 4 days.
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2 thoughts on “Reese’s Pieces Peanut Butter Cookie Bars”

  • The ingredient list does not have eggs on it but then your instructions has eggs listed how many eggs does the recipe call for?
    Was trying to make this recipe today with my two toddlers and now we’re at a stopping point. Thank you.

    • Hello,

      I’m so sorry! I have update the recipe. It takes 2 large eggs. Again I apologize, that’s what I get for writing up my posts with my two toddlers around. Happy Baking!

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