These are called surprise cookies. This name had a bit of a double meaning when I made them recently as a surprise for a friend’s birthday. They are also normally called surprise cookies from the slightly toasted marshmallows tucked in between the rich brownie-ish cookie and fudgy frosting. I took them to work on my friend’s birthday and they were a huge hit. I had to bring her a few to take home the next day as her birthday treats were gone the day of!
Note, I did tweak the recipe a tad, especially the frosting – I cut back on the milk and powdered sugar compared to the original frosting recipe a lot which made more of a fudge for the cookie topping vs a frosting. I also made the cookies on a smaller scale than the original recipe called for, but these cookies are pretty rich so I think the smaller size was perfect.
Recipe (Adapted from Martha Stewart’s Cookies )
For the cookies
- 1/2 cup softened butter
- 1 cup sugar
- 1 egg
- 1/2 cup milk
- 1 tsp vanilla
- 1 3/4 cups flour
- 3/4 cup cocoa powder
- 1/2 tsp baking soda
- 1/2 tsp salt
- Around 100 mini marshmallows
For the frosting
- 6 Tbsp butter
- ¾ cup cocoa powder
- 2 Tbsp milk
- 1 ¼ to 1 ½ cup powdered sugar
Preheat the oven to 375F. I used my stand mixer and creamed the butter and sugar together for 2 minutes until butter and sugar is pale yellow and fluffy. Add the egg, milk, and vanilla. Once combined add the dry ingredients and mix on low until incorporated.
Scoop tablespoonfuls of dough onto the cookie sheet. I only baked 8 cookies per sheet to give them room to expand. Bake cookies for 6-8 minutes (the cookie should be firm). Next press 3 mini marshmallows onto the cookie and bake for another 2 minutes until toasted. Allow cookies to completely cool.
Melt butter and cocoa powder for frosting in a saucepan, stirring occasionally. Add in milk and 1 and ¼ cup powdered sugar. If desired add additional powdered sugar (you may need a bit more milk for consistency).
Spread a small amount of frosting on each cookie, enough to hide the marshmallows!
Once the frosting has dried/set you can stack the cookies using wax paper between the layers of cookies.