This Marshmallow Oreo Chocolate Chip Cookie Bars recipe is a chocolate lover’s dream! Double chocolate chip cookies are filled with crushed Oreos and marshmallow fluff, making these double chocolate cookie bars practically irresistible.
I’m kind of obsessed with these Marshmallow Oreo Chocolate Chip Cookie Bars! I mean, can you blame me?? I mean, I’d love these double chocolate cookie bars on their own, but when you stuff them with the works?? I can’t be held responsible for inhaling these in 5 seconds flat.
Did you guys survive Amazon Prime Day?
I was one of those affected by the system being down, so instead of impulse buying a bunch of items I don’t need but might want someday (and now they’re 1000% off so I should buy stat), I saw the whole gang of Amazon Prime dogs.
We’ll call it a blessing in disguise.
Now, I wasn’t too upset by the whole thing since I wasn’t looking for anything in particular, and actually found their ‘ruff’ start (ha, get it?? Amazon dogs…ruff…anyway…) slightly humorous.
Ohhh, and boy oh boy, did I ever enjoy reading through the Twitter comments after Amazon released their statement about the problem (guys, some of the comments were pure gold).
I’m sure they still made billions of dollars and whatnot despite the problematic start, but I’m sure the stress level was through the roof for a little while.
And the best cure for stress? Chocolate, obviously. Marshmallow Oreo Chocolate Chip Cookie Bars, specifically.
As much as I am a complete and total dessert person in general, if there’s a choice between cookies, cake, pastries, etc., it’s a safe bet I’ll grab the cookie first.
There’s really nothing like a perfectly baked cookie (I’m not a cookie dough person…when I was 6, I ate all the cookie doughs out of a cookie dough ice cream and the joke was on me because I never wanted cookie dough ever again), and there isn’t a time in my life where a cookie doesn’t sound good.
Now, if I thought making regular cookies was easy, shoot, making cookie bars is a breeze then. Instead of having to scoop out individual cookies, all you do is press the whole thing in a pan and call it a day.
Safe to say there will probably be a lot of cookie bar recipes making an appearance here. I’ve already shared these Marshmallow Peanut Butter Chocolate Chip Cookie Bars and these Chocolate Chip Butterscotch Cookie Bars.
And I’ve already got about 12 other ideas for easy chocolate chip cookie bars jazzed up to the next level, peanut butter cookie bars, and maybe even something involving a dark chocolate cookie bar (with coconut maybe?? I’m a coconut hound. That sounds…weird? Let’s just say I like coconut a whole bunch).
As much as I straight up L-O-V-E the other two cookie bar recipes I shared recently, I am definitely calling these Marshmallow Oreo Chocolate Chip Cookie Bars my current fav.
Let’s talk easy double chocolate cookie bar tips & tricks:
- These cookie bars are meant to be gooey, so it’s important to make sure you do not over bake these double chocolate chip cookie bars. Once the cookie bars rise, the edges crisp, and the center is no longer jiggly, take them out of the oven. They might sink slightly, which is just fine.
- Additionally, cocoa powder can make baked goods really dry, so you want to make sure that not only is there enough fat in the recipe (in this case, butter), but also that they aren’t over baked. I know, I know. I’ve mentioned it twice. Basically, just keep an eye on them once they are almost done!
- You can use any kind of chocolate chips you want to use. I chose semi-sweet chocolate chips, but you can use white chocolate chips, milk chocolate chips, dark chocolate chips, or a combination of anything.
Marshmallow Oreo Chocolate Chip Cookie Bars Tips & Tricks cont:
- Marshmallow cream can be difficult to work with since it is such a sticky substance. I have found that if you dip your spoon or spatula in warm water first, it helps keep the marshmallow from sticking as much.
- Also, if you like a whole bunch of marshmallow cream, definitely use the whole 7 oz jar. If you want a little less, I’d suggest using 4 oz instead. They won’t be as gooey, but they do still have a rich chocolate and marshmallow flavor. (I tried it both ways. I prefer using the whole jar, but people liked them both ways!)
All diets have been cancelled until further notice.
- 1 cup butter, softened to room temperature
- 1 cup brown sugar
- 3/4 cup granulated sugar
- 2 eggs
- 2 tsp vanilla extract
- 1 tsp baking soda
- 1 tsp salt
- 1/2 tsp espresso powder, 100% optional, but it enhances the chocolate flavor
- 2 cups all purpose flour
- 2/3 cups cocoa powder
- 1 1/2 cups semi sweet chocolate chips
- 2/3 cup oreos, roughly chopped
- 1 7oz jar marshmallow fluff*
Preheat oven to 350 degrees and line a 9x9 or 11x7 baking dish with non-stick foil or grease well with baking spray. (The 9x9 pan will yield thicker bars while the 11x7 will be slightly thinner. The ones pictured above were made in a 9x9 pan.)
In a bowl, cream butter, brown sugar, and granulated sugar together until well combined.
Add in eggs, one at a time, beating well after each addition.
Add in vanilla extract and mix.
Next, add in baking soda, salt, all purpose flour, and cocoa powder. Mix until well combined.
Lastly, add in chocolate chips and chopped oreo cookies and mix until combined.
Spread half of the cookie dough evenly in the bottom of the pan.
Spread marshmallow fluff on top of the dough as evenly as possible.
Press or spread the remaining cookie dough on top of the marshmallow fluff in an even layer (it’s fine if some of the marshmallow fluff is showing).
Bake for about 25 minutes, or until the cookie bars have risen and the center is not jiggly when the pan is moved gently.
Allow to cool at least 30 minutes before slicing. I prefer waiting at least an hour before cutting into them, or even refrigerating them and then cutting into them. By the way, these taste fantastic cold!
Store remaining bars in an airtight container. They are fine at room temperature, if it’s not too warm, for 3-4 days. Or, you can refrigerate them as well.
*If you want these slightly less gooey, you can use 4 oz of marshmallow fluff instead.
Here are some other chocolate recipes you might love: