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Monstrously Easy Chocolate Frankenstein Cookies

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Chocolate Frankenstein cookies are a new hit in my household. I made them recently after spotting the Peeps Frankenstein Marshmallows at the store. With Halloween approaching quickly I wanted to make something fun and festive, but still quick and easy. My girls are at the age where they still love the simple little holiday things, and so it was important to “impress” them, too. These cookies ended up checking off all of those boxes!

When I was brainstorming ideas with my oldest daughter she mentioned “hot chocolate and marshmallows” as an inspiration. Boy was she on to something! You’ll definitely want to eat these chocolate and marshmallow cookies with a nice, cold glass of milk.

Well, I hope you’re ready for some amazing cookies! Let’s get to baking!

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Ingredients for the Chocolate Frankenstein Cookies

Monstrously Easy Chocolate Frankenstein Cookies
You can find these at most grocery stores and stores that carry other Peeps.

One thing that I absolutely love about these chocolate Frankenstein cookies is that they are so easy to make! My life has been absolutely crazy lately. As much as I may want to eat cookies, the last thing that I want to do right now is spend hours in the kitchen making food (and big messes). Fortunately, neither of those things happen while making these cookies.

So if you’re ready to get baking, here’s what you will need:

Those are the only ingredients that you need! Of course you’ll need a baking sheet, parchment paper and a cookie scoop or large spoon as well. But that’s it! So simple and so easy to make.

Creating Frankenstein (Cookies)

Creating the chocolate Frankenstein cookies takes very little time. First, preheat the oven to 350°F. In a large bowl you’re going to mix together the cake mix, egg whites, flour and vegetable oil. Once that is all combined, fold in the two different types of chocolate chips. The batter will be thick and wet, but it shouldn’t be too sticky.

The batter for the Frankenstein cookies.

Line your baking sheet with the parchment paper. Then scoop the cookies onto the baking sheet. They should be approximately 1-1.5 inch in diameter. You want them to be a little larger so that the marshmallow will fit in the middle after the cookies are done baking.

Once you placed the cookie dough onto the baking sheet, bake at 350°F for 10 to 12 minutes. You want the cookies to be somewhat soft when they come out so that you can press the marshmallow Peep into the still-hot cookie.

Monstrously Easy Chocolate Frankenstein Cookies
Press the Peeps into the warm cookies. Kids will love helping with this part!

When you have removed the cookies from the oven, press the marshmallow Peeps into the centers of the cookies. The heat from the cookies along with the melted chocolate chips will allow the marshmallow to melt a bit and adhere to the cookie. Don’t push too hard, though, or you might crack Frankenstein’s cute face!

Eat Those Chocolate Frankenstein Cookies

Monstrously Easy Chocolate Frankenstein Cookies
So cute! They’re yummy, too.

After your cookies have cooled then it is time to eat them. These cookies are definitely one of our new favorites! I’m not going to lie…I typically don’t eat gluten products, but I ate two of these the night that I made them. They are so soft and their flavor is amazing! My daughters and husband loved them, too.

One of the best things about cookies like these is that you can switch up the Peep character to match whatever holiday is happening at that time. I was telling my girls the other day that Peeps used to be just bunnies and chickees, but today the options seem endless!

Halloween Treats Are So Much Fun

I think Halloween is so fun because you can be super creative with costumes and treats alike. If you make these I would love to see pictures and hear what you think! Please share them with us in the comments below, or send an email to

Start working on those treats, friends! Halloween will be here before you know it.

Until next time…


Rating: 1 out of 5.

Chocolate Frankenstein Cookies

Send your kids into a Frankenstein frenzy this Halloween when you make them these fun and easy chocolate Frankenstein cookies! Trust me when I say that you'll love eating them as much as your kids do.
Prep Time 15 minutes
Cook Time 12 minutes
Total Time 27 minutes
Course Dessert
Cuisine American
Servings 12 cookies


  • baking sheets
  • large mixing bowl
  • cookie scoop
  • Parchment Paper


  • 2 packs Frankenstein Peeps Marshmallows 6 per pack
  • 1 box German chocolate cake mix I used Duncan Hines but you can use whatever you find
  • 2 large egg whites
  • 2 tbsp flour
  • 1/2 cup vegetable oil
  • 1 cup milk chocolate chips
  • 1/2 cup semi sweet chocolate chips


  • Preheat your oven to 350°F. Line two baking sheets with parchment paper and set them aside.
  • In a large bowl, mix together the cake mix, egg whites, flour and vegetable oil. You want to mix it until everything is combined. After you've done this then fold in your chocolate chips.
  • Scoop the cookie dough onto your two baking sheets. You can scoop them with a cookie scoop or a large spoon. The cookies should be 1-1.5 inch in diameter. Make sure that you place the cookies approximately 1 inch apart on the baking sheet.
  • Place your cookies in the oven and bake for 10 to 12 minutes. You want them to still be slightly soft when they come out of the oven.
  • Once they've baked, remove the cookies from the oven. Immediately press one Frankenstein Peep into each cookie. Let the cookies sit and cool after this is done.
  • Once the cookies have cooled, serve them on a festive Halloween tray or plate and enjoy!
Keyword cookies, halloween cookies