These easy and decadent Mint Chocolate Sandwich Cookies are perfectly fudgy, soft, and filled with creamy mint buttercream!
Looking for a FUN and delicious treat to make for St. Patrick's Day? Irish Cream Tiramisu would make a classy dessert option or Mint Cheesecake Brownies would be great too. If you are Canadian (or not), you will love my recipe for buttery Mint Nanaimo Bars!
But for a more casual option, these chocolate mint sandwich cookies are kind of like a homemade mint Oreo cookie. No, they are not perfectly round crunchy biscuits made with black cocoa stuffed with a stiff filling. Instead, these are extra soft chocolate cookies (made super easy with a chocolate cake mix) stuffed with a creamy buttercream frosting filling. My Homemade Oreo Cookies are another must-make recipe!
If you are just a cookie lover in general, be sure to try my popular chewy coconut oatmeal cookies, these irresistible soft chocolate chip peanut butter cookies, or my spicy ginger cookies.
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⭐️ Why You Need to Make This Recipe
- Rich and decadent. Warning: these cookies are very chocolatey.
- Perfect for St. Patrick's Day. A fun green treat for St. Paddy's day!
- Easy to make. Chocolate cake mix is a convenient shortcut. You only need 5 ingredients to make the cookie part!
🧈 Ingredients
Here are the ingredients needed to make these homemade mint Oreos.
- Chocolate Cake Mix - This recipe was tested with a 375-gram box of Betty Crocker chocolate fudge cake mix.
- Peppermint Extract - I recommend a pure peppermint extract for best flavor.
- Food Coloring - You will need around 2 drops of artificial green food coloring and 1 drop of blue to make the minty green color. I used this Watkins natural food coloring which is not as vibrant as artificial food coloring, so I used around 6 drops of green and 3 blue. Or you can omit the food coloring entirely.
See the recipe card for the full list of ingredients with measurements.
📝 Substitutions
Here are some possible substitutions and variations that just might save you a trip to the grocery store!
- Salted Butter - Unsalted butter may be used instead, simply add ½ teaspoon of salt for every 1 cup of butter.
- Color - Use a few drops of red food coloring to make pink peppermint buttercream filling for these sandwich cookies instead.
- Flavor - If you don't want mint-flavored sandwich cookies, feel free to omit the color and use vanilla instead of the mint flavoring for a classic vanilla chocolate sandwich cookie. Or try my Homemade Oreo Cookies which have a vanilla cream cheese frosting!
📃 Instructions
Step 1: Cream together the softened butter. Add the eggs and mix until combined. The mixture may appear grainy but that is alright.
Step 2: Sift in the cake mix and cocoa powder using a sieve.
Step 3: Mix until fully combined. Cover and chill in the refrigerator for at least 30 minutes.
Step 4: Shape into balls using about 1 ½ tablespoons of dough per cookie. Arrange on a parchment paper lined pan allowing room for spreading.
Step 5: Bake for 10-12 minutes or until the tops are cracked. Let cool before filling with the frosting.
Step 6: Cream together the softened butter, powdered sugar, peppermint extract, vanilla, milk, and food coloring. Mix on high for 1 minute until fluffy.
Step 7: Transfer the frosting to a piping bag fitted with a large piping tip. I used a Wilton 1M open star tip for the pictured cookies.
Step 8: Pipe frosting onto half of the cookies. Sandwich with the other half of the plain cookies.
💡 Top Tip
Ensure you take your butter out of the refrigerator to soften before making any recipe that calls for "softened butter" or "room temperature butter". If you do forget, you may microwave it in 5-10 second increments just until the butter is soft. Do not let it melt at all!
❓ Recipe FAQs
I have not tested it but you could try it with a gluten-free chocolate boxed cake mix
They do not taste exactly like real Oreo cookies. This recipe is for a homemade sandwich cookie with the same flavors of chocolate cookies and mint buttercream filling, however, they do have a very different texture.
No. You may omit the food coloring entirely or use a natural food coloring or an alternative such as matcha powder or spirulina.
💚 More Chocolate Mint Recipes
Looking for other recipes with the chocolate and mint combination? Try these:
If you tried these Chocolate Mint Sandwich Cookies or any other recipe on my website, please leave a ⭐️ star rating and write a little note telling me how it went in the comments below. Thank you!!
📖 Recipe
Mint Chocolate Sandwich Cookies
Equipment
- baking sheet(s)
- parchment paper or non-stick spray
- mixing bowl
- electric handheld mixer
- silicone spatula
- measuring cups & spoons
- piping bag with your desired tip
Ingredients
For the Cookies:
- ½ cup salted butter * softened
- 2 eggs
- 375 grams chocolate fudge cake mix *
- ¼ cup cocoa powder
For the Icing:
- ¼ cup salted butter * softened
- 1 ½ cups powdered sugar (confectioners sugar)
- ¼ teaspoon peppermint extract
- ½ teaspoon vanilla extract
- 1 tablespoon milk
- 2 drops green liquid food coloring *
- 1 drop blue liquid food coloring *
Instructions
To make the Cookies:
- In a large-size bowl using an electric handheld mixer on medium speed, beat together the softened butter and eggs until combined.
- Sift the cocoa powder and cake mix together using a sieve into the wet ingredients and mix on low speed until the dry ingredients are well combined - the dough will be soft. Cover the dough and refrigerate for 30 minutes.
- Preheat the oven to 350℉. Line 2 baking sheets with parchment paper. When done chilling, roll the dough into balls, using about 1 ½ tablespoons of dough per cookie. Place on the prepared pans leaving spreading room between each cookie.
- Bake the pans of cookies in the preheated oven for 10-12 minutes or until the tops start to crack. Let cool on the pan for 5 minutes before transferring to a wire rack to finish cooling completely before sandwiching with the frosting. Bake the remaining cookies.
To make the Frosting:
- In a medium bowl using an electric handheld mixer on medium speed, whip the softened butter until fluffy. Add the powdered sugar, peppermint extract, and vanilla and beat on low speed until well combined. Add milk if the texture is too thick. Add food coloring, 1 drop at a time, until your desired color is achieved. Pipe or spread with a knife, about 1 tablespoon of frosting per cookie, onto half of the cooled cookies. Sandwich together with the plain cookies. Enjoy!
Notes
- Unsalted butter may be used instead, simply add ¼ teaspoon of salt for every ½ cup of butter.
- This recipe was tested with a 375-gram box of Betty Crocker chocolate fudge cake mix.
- You will need around 2 drops of artificial green food coloring and 1 drop of blue to make the minty green color. I used Watkins natural food coloring for the pictured cookies which is not as vibrant as artificial food coloring, so I used around 6 drops of green and 3 blue. Or you can omit the food coloring entirely.
Debra Soares
Thanks for sharing the recipe they look delicious and easy to make. I will be making for Christmas Eve
Naomi Andres
That's wonderful! Please let me know how it goes!
Naomi
Taryn
Ahhh, these were so fun to make (and eat! 😂). I love feeling like I've made some really impressive recipe without hardly any work. 😜 Definitely a tasty (and gorgeous) treat.
Naomi
Thank you so much, Taryn!! I'm happy to hear you like this recipe as much as I do, haha!
Naomi
Isabel Olivetti
Ohhhmygoodness, now I'm craving these xD Gonna have to go make some!
Naomi
They are SO yummy!! Thanks Isabel!
Naomi