Reese's Fluffernutter Bars

I love anything that involves Reese’s peanut butter cups – ice cream, cookies, brownies, cupcakes, you name it!

I feel like I’m writing an ode to Reese’s peanut butter cups here…but they are seriously the best thing ever!

And these fluffernutter bars are a Reese’s PB cup fan’s dream come true.

Layers of rich peanut butter cookie dough, Reese’s peanut butter cups (obviously!) and marshmallow fluff — it might sound a little “out there” but let me tell you it works.

Trust me, if you make these Reese’s fluffernutter bars for the next party or potluck you’re invited to, you’ll be the crowd favorite! (And you’ll probably get requests to make them again next time!)

Reese's Fluffernutter Bars

Prep Time
10 mins
Cook Time
20 mins
Total Time
1 hr 30 mins


1/2 cup butter softened
1/3 cup peanut butter
1 cup packed brown sugar
1 egg
1 teaspoon vanilla extract
1 1/4 cups all purpose flour
9-12 Reese’s Cups regular size (not fun size)
2/3 cup chocolate chips
1 container marshmallow creme 7 ounce container


  • How to make Peanut Butter Fluff Bars
  • Preheat oven to 350°F.
  • Line an 9-inch square baking pan with parchment paper, allowing the parchment paper hang over all the edges of pan, so that you can use it to pull the bars out of the pan later.

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