This post may contain affiliate links. For more information, read my disclosure policy.

Peanut Butter Cup Gooey Cookie Bars are chocolate chip cookie bars filled with peanut butter cups and gooey peanut butter filling! 

These are a peanut butter explosion in one of the best cookie bar recipes EVER.

Pin it now to save for later

Pin Recipe
Peanut Butter Gooey Bars in a stack


You guys: Peanut Butter Cup Gooey Bars. These are going to be your BFF, promise.

Y’all know how much I like my gooey bar recipes. I’m constantly dreaming up new versions because…Can’t stop won’t stop.

Today I married my Chocolate Chip Cookie Gooey Bars and my love of Reese’s Peanut Butter Cups.

I didn’t even know what to call these: they’re cookie bars filled with gooey peanut butter and peanut butter cups.

These are INSANE – and insanely easy:

  • My best ever Chocolate Chip Cookie Recipe
  • Filled with peanut butter sweetened condensed milk
  • And peanut butter cups
Gooey Cookie Bars with Peanut Butter in a stack

What are these cookie bars?

My version of gooey bar is a cookie (or cake) bar. Half the dough is pressed into the pan, then it’s filled with sweetened condensed milk and topped with the rest of the dough.

I’ve made these in SO MANY ways, with cake mix and from scratch, and all different flavors and fillings, but THIS one is my favorite.

The base of the cookie bars starts with a double recipe of my favorite chocolate chip cookie dough. That recipe is my old standby and it produces the best chocolate chip cookies ever.

How to make Peanut Butter Cup Gooey Bars

Since my cookie dough is made with melted butter you can easily stir it together in one bowl with a spoon or spatula. Simply stir the butter and sugars, then add in the eggs, baking soda, salt and vanilla, and then the flour.

For chocolate chips you have choices:

  • Use regular chocolate chips (any kind)
  • Use mini chocolate chips
  • Use a combination of chocolate and peanut butter chips
  • Use chopped peanut butter cups

Trader Joe’s chocolate chips are my favorite – they stay melty and gooey even after the cookies cool.

PRO TIP
How to make Peanut Butter Cup Gooey Bars

Peanut Butter Gooey Filling

My normal gooey bar filling is plain sweetened condensed milk, but for these bars I wanted a gooey peanut butter filling, so I mixed peanut butter with the SCM. This adds peanut butter flavor to every bite of these cookie bars.

I also filled the bars with miniature Reese’s Peanut Butter Cups. You can use any peanut butter cup size, just chop them if you use bigger ones than the minis.

How to make Peanut Butter Cup Gooey Bars process collage

Peanut Butter Cup Gooey Bars are simple to assemble: just press half the dough in the bottom of the pan. It’s pretty easy to do this, since it’s a pretty liquidy dough right after mixing.

The peanut butter sweetened condensed milk gets drizzled over the top, then add the peanut butter cups.

Drop pieces of the rest of the dough all over the top. It won’t be solid but it’ll bake together in the oven.

Gooey Cookie Bars with Peanut Butter in a stack overhead

When they bake up they become rich and gooey and so peanut buttery! Each bar is like a little meal that you can’t stop eating. Get out your glass of milk with these babies!

I can think of 100 reasons why you need to make the Peanut Butter Cup Gooey Bars recipe today. #1: because you just can’t NOT make them.

Other gooey bar recipes:

Have you made this recipe?

Tag @crazyforcrust on Instagram or hashtag it #crazyforcrust

Peanut Butter Gooey Bars in a stack
4.96 from 189 votes
The BEST EVER Peanut Butter Cup Gooey Bars – these chocolate chip cookie bars are filled with peanut butter cups and gooey peanut butter sweetened condensed milk!
Prep Time 22 minutes
Cook Time 46 minutes
Total Time 1 hour 8 minutes
Yield 36 servings
Serving Size 1 bar

Ingredients
 

  • 1 cup unsalted butter, melted
  • 3/4 cup granulated sugar
  • 1 cup light brown sugar packed
  • 2 large eggs
  • 1 tablespoon pure vanilla extract
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 3 1/4 cups all-purpose flour
  • 3/4 cup chocolate chips
  • 30 Miniature Peanut Butter Cups see note
  • 1 14 ounce can fat-free sweetened condensed milk
  • 1/4 cup creamy peanut butter

Instructions

  • Preheat oven to 350°F. Line a 9×13” baking pan with foil and spray with cooking spray for easy removal.
  • Stir together melted butter with both sugars. Add eggs, one at a time, mixing completely.  Mix in vanilla extract, salt, and baking soda. Mix flour in slowly. Stir in chocolate chips.
  • Pour the sweetened condensed milk into a small bowl and add the peanut butter. Stir until smooth.
  • Press half the cookie dough in the prepared pan. (Spray your hands with nonstick cooking spray so it won’t stick to you.) Top the dough with peanut butter cups.
  • Pour sweetened condensed milk mixture over the top of the bottom layer (be careful to leave about 1/4” edge around the pan so the milk doesn’t touch the foil), then break up the remaining cookie dough and place on top of milk. Press with your hands to flatten. It will mostly cover but not completely cover the bottom layer.
  • Bake for about 30-35 minutes until the tops of the bars just start to get golden brown. Cool completely before slicing into bars.
  • Store in an airtight container for up to 3 days or freeze for up to one month. These are best served room temperature.

Recipe Video

Recipe Notes

Peanut Butter Cups:
  • Use 1 (4 ounce) bag minis (the bite size ones that come unwrapped) OR
  • About 30 miniatures that you unwrap and chop

Recipe Nutrition

Serving: 1bar | Calories: 206kcal | Carbohydrates: 32g | Protein: 4g | Fat: 8g | Saturated Fat: 4g | Cholesterol: 25mg | Sodium: 635mg | Fiber: 1g | Sugar: 23g
Nutritional information not guaranteed to be accurate
Course Dessert
Cuisine American

Click here to see more PEANUT BUTTER recipes!

Click here for my ultimate Football Party Menu!

Peanut Butter Gooey Bars

Peanut Butter Gooey Bars are the BEST chocolate chip cookie bar filled with peanut butter sweetened condensed milk and peanut butter cups. This is an EPIC easy dessert gooey bar everyone loves!

Last Updated on September 4, 2021



Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

Learn to Bake in 4 Days!
Get my tips, tricks and recipes to take your baking to the next level for FREE!

Leave a Comment

Your email address will not be published. Required fields are marked *

Recipe Rating




110 Comments

  1. This is wonderful! Thank you. I have made it about 5 times in the last month.. maybe today is 6 lol.
    My family likes them or neighbors and people I work with think it’s the best!!!
    I made home made condensed milk today, it tasted good by itself so I’m sure it will be good in the cookie bars….mmmmm and I’m trying to diet 😆 . I am gonna try a sugar free version soon!

  2. These are absolutely PHENOMENAL!! Made them for a friends birthday (who is a peanut butter fanatic) and I’m pretty sure they are the richest, most decadent treats I’ve ever made. And I’m an avid baker. Hands down 5 stars. I didn’t chop the small Reese’s cups and I think it was maybe better that way. I’ll make them again and chop them, but it definitely made the bites with the Reese’s stand out. Next time, I would pour the peanut butter condensed milk mixture first before topping with the peanut butter cups for ease of putting the dough on top.

  3. It says to cook for 30-35 minutes but it was super wobbly still. Then I noticed at the beginning of the recipe it said cook time 46 minutes. I took it out because in was browning. Is this a typo?

    1. All ovens (and pans) bake differently. Were you using a glass or metal pan? My new oven does that – it browns so much faster on top – than my old one. So now I’ll tent things with foil if I notice them browning too much on top.

  4. Recipe has peanut butter cups going on top of first layer of dough and then the milk peanut butter mixture. Video shows milk mixture first and then chocolate. I put the peanut butter cups first because I didn’t see the video. Is either way okay? Still in the oven so I’m not sure it makes a difference. Just curious for next time. Thanks.