Mint Chocolate Cookie Bars

If you’re a fan of mint and chocolate (and who isn’t, right?), then these Mint Chocolate Cookie Bars are going to become your new favorite dessert! Imagine a chewy, chocolatey base packed with rich cocoa flavor, topped with a smooth, minty frosting, and then drizzled with even more chocolate. It’s like the best of both worlds—cool, refreshing mint and indulgent chocolate—coming together in one delicious, easy-to-make treat. Plus, they’re totally shareable, making them the perfect snack for any occasion. Trust me, these bars are about to win everyone over, one bite at a time.

Why You’ll Love Mint Chocolate Cookie Bars

  • Perfect Flavor Combo: The chocolate and mint pairing is timeless for a reason. It’s the ultimate balance of rich and refreshing.
  • Easy to Make: No need for any fancy equipment or complicated steps—just simple ingredients and a few easy instructions. You’ll have these whipped up in no time!
  • Shareable Treat: These bars are cut into squares, so they’re easy to grab, share, and enjoy with friends and family.
  • Customizable: Want a little extra chocolate? Add some chocolate chips to the dough or top it with crushed mint chocolate candies. The options are endless!
  • Make Ahead: These bars keep really well in the fridge, so you can make them ahead of time and enjoy them later. They’re perfect for prepping for parties, bake sales, or even just as a weekly treat.

Disclosure: This post contains affiliate links.If you click and make a purchase, I may earn a small commission at no extra cost to you.

Milk Frother

Buy Now →

Meat Thermometer

Buy Now →

Olive Oil Sprayer

Buy Now →

Ingredients

For the Cookie Base:

  • Butter: The key to making these bars soft and chewy.
  • Sugar: Adds sweetness to balance the cocoa.
  • Brown Sugar: Helps make the bars extra moist and chewy.
  • Eggs: Essential for binding everything together.
  • Vanilla Extract: A splash of vanilla adds a nice depth of flavor.
  • Flour: All-purpose flour is perfect for the cookie dough.
  • Cocoa Powder: The star of the cookie base, giving it that rich chocolatey flavor.
  • Baking Soda: Helps the bars rise slightly and keeps them from being too dense.
  • Salt: A pinch of salt enhances the chocolate flavor.
  • Chocolate Chips: Optional, but they make the cookie base extra chocolaty.

For the Mint Frosting:

  • Powdered Sugar: For sweetness and to create that fluffy, smooth texture.
  • Butter: It makes the frosting creamy and rich.
  • Mint Extract: This is what gives the frosting that cool, refreshing minty flavor.
  • Milk: To get the perfect consistency for spreading.
  • Green Food Coloring (optional): For that classic minty green hue.

For the Chocolate Drizzle:

  • Chocolate Chips: A little extra chocolate never hurt anyone, especially when it’s drizzled on top of a minty treat.
  • Butter: Helps melt the chocolate and create a smooth, pourable drizzle.

Instructions

Step 1: Preheat and Prepare

Preheat your oven to 350°F (175°C) and line a 9×9-inch baking pan with parchment paper or grease it with butter or cooking spray. This will make it easier to lift the bars out of the pan once they’ve cooled.

Step 2: Make the Cookie Base

In a large mixing bowl, cream together the butter, sugar, and brown sugar until light and fluffy. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. If you want a little extra chocolatey goodness, fold in the chocolate chips.

Spread the dough evenly into the prepared baking pan and bake for 18-22 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs. Be careful not to overbake—these bars should be soft and chewy.

Step 3: Make the Mint Frosting

While the cookie bars are baking, make the frosting. In a medium bowl, beat together the butter and powdered sugar until smooth. Add the mint extract and a splash of milk, mixing until the frosting is creamy and spreadable. If you’d like, add a few drops of green food coloring to give it that classic minty green color.

Once the cookie bars have cooled completely in the pan, spread the mint frosting evenly over the top.

Step 4: Drizzle with Chocolate

In a microwave-safe bowl, melt the chocolate chips and butter together in 20-second intervals, stirring in between, until smooth and glossy. Drizzle the melted chocolate over the frosted cookie bars using a spoon or a piping bag for extra control.

Step 5: Chill and Cut

Refrigerate the bars for about 30 minutes to allow the chocolate drizzle to set and the frosting to firm up. Once chilled, cut into squares or bars and serve!

How to Serve Mint Chocolate Cookie Bars

  • Perfect for Parties: These bars are easy to share at parties or gatherings. They look impressive but are simple to make!
  • Great for Snack Time: Need a sweet pick-me-up during the day? Grab a square and enjoy the chocolate-mint combo.
  • Bake Sales or Gifts: Wrap a few in parchment paper and tie them with a ribbon for a cute homemade gift. They’re sure to be a hit!

Additional Tips

  • Make them Gluten-Free: You can substitute the all-purpose flour with a gluten-free flour blend to make these bars gluten-free.
  • Add More Mint: If you love mint, you can add a few crushed mint chocolate candies (like Andes mints) to the cookie base for extra flavor.
  • Change the Chocolate: If you prefer white chocolate, feel free to swap out the chocolate drizzle with melted white chocolate for a fun twist.

FAQ Section

Q1: Can I make these bars ahead of time?
A1: Yes! These bars store well in an airtight container at room temperature for 3-4 days. You can also refrigerate them to help keep the frosting firm.

Q2: Can I use a different extract in the frosting?
A2: Absolutely! You can swap out the mint extract for other extracts like chocolate or vanilla if you want a different flavor profile.

Q3: How do I store these bars?
A3: Keep them in an airtight container at room temperature for up to 4 days. If you need to keep them longer, store them in the fridge, and just bring them to room temperature before serving.

Q4: Can I freeze Mint Chocolate Cookie Bars?
A4: Yes! You can freeze the bars (before cutting them into squares) for up to 3 months. Let them cool completely, then wrap them tightly in plastic wrap and foil. When ready to eat, thaw them in the fridge overnight.

Q5: How can I make the frosting a little fluffier?
A5: If you’d like a fluffier frosting, just add a little more powdered sugar, or whip the frosting for an extra minute to incorporate more air.

Q6: Can I use a store-bought cookie dough for the base?
A6: Sure! If you’re short on time, store-bought dough will work. Just make sure to spread it evenly in the pan and bake it as directed.

Q7: Can I add nuts to the cookie base?
A7: Yes, you can mix in some chopped walnuts or pecans if you’d like a bit of crunch alongside the chocolate and mint flavors.

Q8: How thick should the frosting layer be?
A8: It’s really up to you! I suggest a generous layer of frosting—about ½ inch thick—so each bite has a nice minty punch.

Q9: Can I use a different type of chocolate for the drizzle?
A9: Of course! You can use dark chocolate, white chocolate, or even milk chocolate depending on your personal preference.

Q10: Can I use a 9×13-inch pan instead of a 9×9-inch pan?
A10: Yes, but you’ll need to adjust the baking time slightly. The bars will bake faster in a larger pan, so check them after 15 minutes and then every few minutes afterward.

Conclusion

These Mint Chocolate Cookie Bars are everything you need in a dessert—chewy, chocolatey, minty, and totally irresistible. Whether you’re treating yourself, sharing with friends, or serving them at a party, these bars will definitely be a crowd-pleaser. The mint frosting is cool and creamy, while the chocolate drizzle adds that perfect finishing touch. So go ahead, get baking, and enjoy a bite of minty chocolate heaven!

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Mint Chocolate Cookie Bars


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Olivia
  • Total Time: 0 hours
  • Yield: 1620 bars 1x

Description

These Mint Chocolate Cookie Bars are the perfect balance of rich chocolate and refreshing mint flavor. With a chewy cookie base, a layer of creamy mint filling, and a smooth chocolate topping, these bars are an irresistible treat for mint and chocolate lovers alike. Perfect for any occasion, these bars are easy to make and are sure to impress your family and friends!


Ingredients

Scale

For the Cookie Base:

  • 1 1/2 cups all-purpose flour
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 1/2 cup unsalted butter, softened
  • 1 cup granulated sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • 1/4 tsp peppermint extract (optional, for extra mint flavor)
  • 1/2 cup mini chocolate chips (optional, for extra chocolate chunks in the base)

For the Mint Filling:

  • 1/2 cup unsalted butter, softened
  • 1 1/2 cups powdered sugar
  • 1 1/2 tsp peppermint extract (or to taste)
  • 2 tbsp milk or heavy cream (adjust for consistency)
  • A few drops of green food coloring (optional, for a fun mint color)

For the Chocolate Topping:

  • 1 cup semi-sweet chocolate chips
  • 2 tbsp unsalted butter

Instructions

  1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line an 8×8-inch square baking pan with parchment paper or grease it with butter or cooking spray.
  2. Make the Cookie Base:
    • In a medium bowl, whisk together the flour, baking soda, and salt.
    • In a separate large bowl, cream together the softened butter and granulated sugar until light and fluffy.
    • Beat in the egg, vanilla extract, and peppermint extract (if using) until well combined.
    • Gradually add the dry ingredients to the wet mixture, mixing until just combined. If desired, fold in the mini chocolate chips.
    • Spread the cookie dough evenly into the prepared baking pan and press it down gently to form an even layer.
    • Bake for 12-15 minutes, or until a toothpick inserted into the center comes out clean. Let the cookie base cool completely in the pan.
  3. Make the Mint Filling:
    • In a medium bowl, beat together the softened butter, powdered sugar, peppermint extract, and milk or heavy cream until smooth and creamy. Add food coloring if desired to give the filling a minty green color.
    • Once the cookie base is fully cooled, spread the mint filling evenly over the cookie layer.
  4. Prepare the Chocolate Topping:
    • In a microwave-safe bowl, melt the chocolate chips and butter together. Heat in 30-second intervals, stirring after each, until smooth and fully melted.
    • Pour the melted chocolate over the mint filling, spreading it evenly with a spatula.
  5. Chill the Bars:
    • Place the pan in the refrigerator for 1-2 hours, or until the chocolate topping is set and firm to the touch.
  6. Cut and Serve:
    • Once the chocolate has set, remove the bars from the refrigerator and cut them into squares.
    • Serve and enjoy these minty, chocolatey, chewy bars!

Notes

  • For a more intense mint flavor, feel free to add more peppermint extract to the filling.
  • You can also top the bars with a few extra mini chocolate chips or crushed mint candies for an extra touch.
  • These bars can be stored in an airtight container in the fridge for up to 1 week.
  • Prep Time: 20 minutes
  • Cook Time: 12-15 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar (out of 16)
  • Calories: 230
  • Sugar: 24g
  • Sodium: 100mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 1g
  • Protein: 3g
  • Cholesterol: 25mg

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star