Filed Under: Chocolate | Cookies

Surprise Cookies

Recipe By Tessa Arias
March 26th, 2012

Surprise Cookies are an indulgent combination of chocolate and marshmallow. Sooo delicious, cute, and fun.

Yield: 30 cookies

Prep Time: 5 minutes

Cook: 30 minutes

Tessa's Recipe Rundown...

Taste: Anytime chocolate and marshmallow get together the result is reminiscent and indulgently sweet.
Texture: The cookie is thick, the marshmallow surprise is sticky, and the frosting is fudgey.
Ease: Totally do-able, just dirties a few dishes.
Appearance: Each bite reveals a pop of bright, white, sticky marshmallow for a fun surprise.
Pros: Cute and fun cookies that are easy enough.
Cons: None.
Would I make this again? Yes.

Surprise Cookies are an indulgent combination of chocolate and marshmallow. Sooo delicious, cute, and fun.

Surprise Cookies are a great combo of chocolate + marshmallow!

Surprise Cookies

I’ve had this recipe marked for a long time. Anything that has a fun, playful, and sweet surprise is bound to be worthwhile. I almost wish I had a niece or nephew or cousin or some child that I could have shared these with. Though it probably wouldn’t be a good idea to pick any kid off the street and ask if they’d like to try my surprise cookies…

However, it would have been fun to see them try to guess what was hiding under the chocolate frosting. Did you guess marshmallow? If you did, you’re right!


Surprise Cookies are a great combo of chocolate + marshmallow!

Surprise Cookies

How to make
Surprise Cookies

Yield: 30 cookies
Prep Time: 5 minutes
Cook Time: 30 minutes
Total Time: 35 minutes
Surprise Cookies are an indulgent combination of chocolate and marshmallow. Sooo delicious, cute, and fun.


For the cookies:

  • 1 3/4 cups all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 stick (8 tablespoons) unsalted butter, at room temperature
  • 1 cup granulated sugar
  • 1 large egg
  • 2 cup whole milk
  • 1 teaspoon vanilla extract
  • About 15 marshmallows, halved crosswise

For the frosting:

  • 3 cups confectioners' sugar
  • 6 tablespoons unsalted butter
  • 1/4 cup unsweetened cocoa powder
  • 1/4 cup plus 2 tablespoons whole milk
  • 4 teaspoon vanilla extract


For the cookies:

  1. Preheat oven to 375°F. Line large baking sheets with parchment paper or silicone baking mats.
  2. In a medium bowl, sift together flour, cocoa, baking soda, and salt.
  3. In the bowl of an electric mixer beat the butter and sugar on medium-high speed until light in color and fluffy, 2 to 3 minutes. Reduce speed to medium-low and mix in the egg, milk, and vanilla. On low speed gradually mix in the flour mixture until combined.
  4. Using a 1 1/2-tablespoon ice cream scoop, drop dough onto prepared baking sheets spacing 2 inches apart. Bake cookies until firm, 8 to 10 minutes. Immediately press a marshmallow half on top of each cookie. Bake until marshmallow begins to melt, 2 minutes more. Let cookies cool completely on baking sheets on wire racks.

For the frosting:

  1. Place confectioners' sugar in a medium bowl. Melt butter with cocoa powder in a small saucepan over medium-low heat, stirring occasionally. Add butter mixture to confectioners' sugar. Whisk in milk and vanilla until thick and smooth.

To assemble:

  1. Spread about 1 tablespoon of frosting on top of each cooled cookie to cover marshmallow. Let stand at room temperature until set, about 10 minutes. Cookies can be stores in single layers in airtight containers for up to 2 days.

Recipe Notes

From Cookies by Martha Stewart
Course: Dessert
Cuisine: American

About Tessa...

I share trusted baking recipes your friends will LOVE alongside insights into the science of sweets. I'm a professionally trained chef, cookbook author, and cookie queen. I love to write about all things sweet, carb-y, and homemade. I live in Phoenix, Arizona (hence the blog name!)

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  1. #
    [email protected] — March 26, 2012 at 11:30 am

    These look amazing! I just made my MIL a chocolate cake with marshmallow frosting last week – it's true – the combo is to die for!

  2. #
    Lauren @ KeepItSweet — March 26, 2012 at 12:11 pm

    These look delicious, always happy to find that kind of surprise in my cookies:-)

  3. #
    Jennifer — March 26, 2012 at 1:45 pm

    I love the marshmallow surprise idea. You could even sprinkle graham cracker crumbs on top and make it s'more cookie.

  4. #
    Tracey — March 26, 2012 at 2:34 pm

    Yum, chocolate and marshmallows – good combo! I must have missed this recipe in my MS Cookies book, but I'm looking forward to trying it now 🙂

  5. #
    [email protected] for Two — March 26, 2012 at 3:14 pm

    I love the surprise center! What a great idea and if this was for a gender reveal party, you could probably dye the insides for the gender of the baby! This looks delicious

  6. #
    Kammie — March 26, 2012 at 3:46 pm

    What a great idea. I'm a sucker for fillings and surprises. I'm gonna have to make these asap

  7. #
    Samantha — March 26, 2012 at 6:28 pm

    I made this same recipe during Christmas with a bit of peppermint extract in the batter and with big, flat round peppermint marshmallows that Jet Puffed came out with. They were a huge hit… I made them for a class and my little professor literally body-checked a 30 yr old grad student to keep him from taking “her cookies.” She was only kind of joking 🙂

  8. #
    runningtothekitchen — March 26, 2012 at 6:59 pm

    These look absolutely sinful in the best way possible! Love the surprise center 🙂

  9. #
    DessertForTwo — March 26, 2012 at 7:03 pm

    Oh my lands, the Mr would love these! I'm bookmarking–thanks! 🙂

  10. #
    Tessa — March 27, 2012 at 1:47 am

    We used to make a brownie really similar to this. I agree, anytime chocolate and marshmallow get together, it's bound to be good!

  11. #
    Emily — March 27, 2012 at 3:12 am

    this reminds me of a mallomar…which always come out around this time! yum! kind of perfect for spring/easter time…you could do them with peeps 🙂

  12. #
    Stephanie — March 29, 2012 at 9:41 pm

    These are some of my favorite cookies! I always make them around the holidays and they are huge hit! Yours look great!

  13. #
    Snappy Gourmet — April 3, 2012 at 5:44 pm

    These cookies look delicious! So many variation possibilities! Yum!

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