Mimi's Organic Eats » Recipes » Thin Mint Biscotti
Thin Mint Biscotti
Cookies • Gluten Free • No Seed Oils • High Altitude | Published March 16, 2022 by Mimi Council
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Thick, buttery, chocolatey, with a hint of mint — this recipe for Thin Mint Biscotti is one I always crave during girl scout cookie season! Now you can enjoy the nostalgic flavor of your favorite minty girl scout cookie but made with organic ingredients!
If you love mint and chocolate as much as I do, make sure to check out some of my other favorite mint chocolate recipes like my Homemade Thin Mints, Mint Oreos, or my Homemade Mint Chocolate Chip Fro Yo.

Table of Contents
You will love this recipe for Thin Mint Biscotti because it is rich and chocolatey with just a hint of mint. It will remind you of your favorite Thin Mint Cookies! I make a simple mint chocolate biscotti and I dip half of it in milk chocolate for a little different take, as traditional Thin Mint Cookies use dark chocolate. But, the light and milk chocolate pairs so well with the mint in these mint chocolate cookies.
And with St. Patrick's Day being tomorrow, these organic cookies are also perfect for the occasion! St. Patrick's Day may seem like an insignificant holiday for some. But, I grew up on the South side of Chicago, and St. Patrick's Day was anything but insignificant. It was almost bigger than Christmas and I'm not joking. Chicago has a huge Irish community, and I felt like the only person who wasn't even the smallest bit Irish!
But, we still celebrated! So, I always like to have something nostalgic on this day, and this biscotti hits the spot! Not only that, but these mint chocolate cookies are quick and easy to make with big, bold flavor! They can be enjoyed anytime, even during Christmas.


Why You'll Love This Recipe
Chocolate + Mint: There's nothing better than cool mint combined with rich chocolate. This biscotti uses Dutch cocoa with peppermint flavor in the dough and it's dipped in milk chocolate.
Crispy: I love biscotti because of it's crispy texture! Biscotti is the best cookie for dipping in milk, so if you love dipping cookies in milk, give this recipe a try!
Make Ahead: Biscotti is a great recipe to make ahead. Especially because it's already crispy, so when it sits out nothing really happens to it, which is why I love making these ahead of time.

Ingredients
- Butter: I use Organic Valley Salted Butter, as it's my favorite. Just use a high quality butter for these organic cookies.
- Cane Sugar: I use organic cane sugar.
- Light Brown Sugar: I like to make my own homemade light brown sugar, as I think it lasts so much longer. But, store bought also works.
- Peppermint Extract: I use organic peppermint extract to give these cookies their cool mint flavor.
- Eggs: Use large eggs.
- Yogurt: I use organic yogurt here so these mint chocolate cookies don't dry out as cocoa can dry out cookies.
- All Purpose Flour: My favorite is Cairnspring Mills.
- Cocoa Powder: I use organic Dutch cocoa powder for the best rich, chocolatey flavor.
- Baking Powder: I use baking powder in these mint chocolate cookies because I'm using Dutch cocoa powder. Be sure to check out my post the Difference Between Baking Soda and Baking Powder for more info on leavening agents.
- Salt: Use a fine sea salt.
- Milk Chocolate: I use organic milk chocolate. Be sure to chop it up into small pieces so it all melts evenly.
Tools Needed
- Scale: Always use a digital food scale for the best results.
- Stand Mixer: I use my stand mixer for ease, but you can also use a hand mixer if you prefer.
- Baking Sheets: You'll need two half sheet pans to bake the cookies.
- Parchment Paper: I always use nontoxic parchment paper for ease, cleanup, and I think it bakes the best cookies. My favorite is Kana.
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Step by Step Instructions
Step 1
Preheat the oven to 350°F. Line a baking sheet with parchment paper.
Step 2
To make the dough: In the bowl of a stand mixer fitted with the paddle attachment, add the butter, cane sugar, light brown sugar, and peppermint extract. Mix on low until combined and there are no chunks of butter. Add the eggs and yogurt and mix just slightly, enough to break the yolk.
In a separate bowl, add the flour, cocoa, baking powder, and sea salt and whisk together. Add to the butter mixture and mix on low until a stiff dough forms.
Step 3
Using your hands form a large log out of the cookie dough and flatten slightly so it’s about 1-inch thick, it should be about 13 x 3 inches.
Step 4
Bake for 35 minutes or until the middle looks set, but not completely done. Remove from oven and let rest for 15 minutes. Trim off the edges, then slice into 12 pieces and bake again for 20 minutes. Allow to cool completely on the baking sheet. (If you're baking at high altitude, be sure to check the Notes at the bottom of the recipe for high altitude baking instructions).
Step 5
To make the topping: Using a double boiler melt 80% of the milk chocolate. Once it reaches 110°F on a chocolate thermometer (find here), remove from heat and add in the remaining 20% and stir to combine completely. Allow the chocolate to sit until it reaches 91°F on a chocolate thermometer and is in the tempering stage.
Step 6
Dip one side of each biscotti into the milk chocolate, place back on the baking sheet. Repeat with the rest of the biscotti. Place baking sheet in fridge to set the chocolate for about 1 hour.

FAQ's
Yes, just add ¼ teaspoon fine sea salt to the recipe.
Yes, feel free to use dark chocolate in place of milk chocolate.
No, if you don't want to temper the chocolate you can skip this step. If you do skip it, then you may just need to store in the fridge to prevent chocolate from sweating.
Biscotti is crispy, so it needs to be stored in a cool dry place. I just leave mine out on the counter on a plate for a few days while we eat them. You can also freeze this biscotti. Just store in an airtight container in the freezer and thaw before eating.
Craving More?
- Mint Oreos
- Organic Thin Mint Cookies
- Homemade Mint Chocolate Chip Fro Yo
- Chocolate Sea Salt Mini Cookies
- Peppermint Mocha Coffee Cake

Thin Mint Biscotti
Mimi CouncilIngredients
Dough
- 113 grams salted butter (softened)
- 113 grams cane sugar
- 57 grams light brown sugar (packed)
- 1 teaspoon peppermint extract
- 1 large egg
- 57 grams plain yogurt
- 212 grams all purpose flour
- 43 grams Dutch cocoa powder (sifted)
- 1 ½ teaspoons baking powder
- ½ teaspoon fine sea salt
Topping
- 284 grams milk chocolate (chopped)
Instructions
- Preheat the oven to 350°F. Line a baking sheet with parchment paper.
- To make the dough: In the bowl of a stand mixer fitted with the paddle attachment, add the butter, cane sugar, light brown sugar, and peppermint extract. Mix on low until combined and there are no chunks of butter. Add the eggs and yogurt and mix just slightly, enough to break the yolk.
- In a separate bowl, add the flour, cocoa, baking powder, and sea salt and whisk together. Add to the butter mixture and mix on low until a stiff dough forms.
- Using your hands form a large log out of the cookie dough and flatten slightly so it’s about 1-inch thick, it should be about 13 x 3 inches.
- Bake for 35 minutes or until the middle looks set, but not completely done. Remove from oven and let rest for 15 minutes. Trim off the edges, then slice into 12 pieces and bake again for 20 minutes. Allow to cool completely on the baking sheet.
- To make the topping: Using a double boiler melt 80% of the milk chocolate. Once it reaches 110°F on a chocolate thermometer (find here), remove from heat and add in the remaining 20% and stir to combine completely. Allow the chocolate to sit until it reaches 91°F on a chocolate thermometer and is in the tempering stage.
- Dip one side of each biscotti into the milk chocolate, place back on the baking sheet. Repeat with the rest of the biscotti. Place baking sheet in fridge to set the chocolate for about 1 hour.
- Store in a cool dry place, or in the fridge for up to 7 days.
Notes
Nutrition
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Perfectly crispy and decadent! I love these biscotti!