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Homemade Copycat Thin Mint Cookies with a deep, dark chocolate cookie coated in a thick layer of minty chocolate. Don’t wait for a Girl Scout to stop by your house – keep a batch in the freezer year round!
I recently made some wonderful Chocolate Wafer Cookies so I thought I’d go down my own path and adapt that recipe by omitting the espresso powder.
Most of my research found recipes recommending semi-sweet chocolate chips as the coating.
We taste tested dark chocolate chips to find the best for coating these cookies.
These Thin Mint Cookies make lovely little gifts ready to pop in the freezer.
The cookies are better kept in the refrigerator or freezer since the chocolate is not actually tempered to prevent melting on your fingers.
Be sure to check the peppermint and adjust the amount to your own taste. The recipe as written below seemed just about right to us!
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Thin Mint Cookies
- 1 ¼ cups granulated sugar
- ½ cup unsalted butter, room temperature
- 1 egg
- 1 teaspoon vanilla extract
- 1 ½ cups all-purpose flour
- ½ cup Special Dark Chocolate Hershey’s Cocoa, unsweetened
- ¾ teaspoon salt
- ½ teaspoon baking powder
- 1-2 teaspoons peppermint extract, to taste (not spearmint)
- 2 to 4 cups dark chocolate chips (see note below)
- In a large mixing bowl beat the granulated sugar and butter until fluffy. Beat in the egg and vanilla until combined. In a separate small bowl whisk together the flour, salt, cocoa and baking powder. Add the flour mixture to the butter and beat until combined. Transfer the dough to a bag or cover with plastic wrap. Refrigerate for at least an hour.
- Preheat oven to 350°F. Roll dough out to ⅛ inch thick on a large piece of parchment or wax paper. Using a cookie or biscuit cutter, cut dough into 2 inch rounds. Bake on a parchment or Silpat lined baking sheet for 8-10 minutes. Since the cookies are a very dark chocolate it may be hard to tell if they are done. If you start to smell chocolate, the cookies are done. Remove to a wire rack to cool.
- Melt 1 cup of chocolate chips in a deep 2-cup measuring cup. I always use the microwave melting instructions on the individual bag or label. Melt the chips at 50% power for 1 minute, then stir. Repeat using 50% power at 30 second increments until almost smooth. Stir until all chips are melted and add ¼teaspoon of peppermint extract. Taste the chocolate and increase or decrease the extract depending on your preference.
- Dip a completely cooled cookie in the chocolate coating both sides. Using a large serving or meat fork, hold the chocolate covered cookie over the melted chocolate tapping gently to remove the excess. Slide the Thin Mint onto wax paper. Cool until the chocolate is set and refrigerate or freeze until ready to serve!
- Toll House Dark Chocolate Chips worked best for me.
- Note the wide range in the amount of chocolate chips. You can dip one side of the cookie and use about 2 cups or use 4 cups to cover the entire cookie. They were great either way.
- Wafer cookies are based on a recipe by King Arthur Flour