Chocolate Mint Slice Bars

Name: Chocolate Mint Slice Bars
Prep time: 20 min
Cook time: 10 min
Total time: 30 min
Yield: 16 bars
Ingredients: 1 cup crushed digestive biscuits; 1/2 cup unsweetened cocoa powder; 1/2 cup sweetened condensed milk; 1/4 cup melted butter; 1 cup powdered sugar; 1/4 cup unsweetened cocoa powder; 1/2 tsp peppermint extract; 2 tbsp softened butter; 200g dark chocolate, chopped; 1 tbsp coconut oil

Highlighted under: Baking & Desserts

I have always had a soft spot for mint and chocolate, and these Chocolate Mint Slice Bars truly elevate that classic combination. Every bite offers a refreshing minty coolness paired with rich chocolate, making it a delightful treat for any occasion. The combination of crunchy base, creamy filling, and a glossy chocolate layer creates an indulgent texture that is simply irresistible. Whether it's for a gathering or a personal treat, I find these bars perfect for satisfying that sweet craving while delivering a burst of fresh flavor. You'll definitely want to keep this recipe handy!

Created by

Marley Quinn

Last updated on 2026-01-13T04:28:12.575Z

One weekend, I decided to experiment with a new dessert that had both bold flavors and a bit of nostalgia. I was surprised by how easy it was to whip up these Chocolate Mint Slice Bars with just a few simple ingredients. The trick is to let the mint filling set properly before adding the chocolate layer, which is crucial for a clean cut and a beautiful presentation.

While testing the recipe, I discovered that using fresh mint extract instead of the usual mint-flavored candies resulted in a superior and more authentic flavor. This is definitely a recipe I'll be passing on to family and friends for years to come!

        Why You Will Love These Bars
        Irresistible blend of rich chocolate and cool mint
No-bake dessert that saves time in the kitchen
Perfect for sharing on special occasions or gatherings

      

Understanding the Layers

The Chocolate Mint Slice Bars feature three distinct layers, each contributing to the overall texture and flavor. The crunchy base made from crushed digestive biscuits provides a firm foundation that holds the layers together. The cocoa powder not only deepens the chocolate flavor but also adds richness that complements the sweetness of the condensed milk. When pressed firmly into the baking dish, this layer should not crumble. Aim for an even thickness to ensure balanced bites.

The mint filling brings a refreshing contrast to the rich chocolate base. The combination of powdered sugar and cocoa adds not only sweetness but also a satisfying creaminess that melts in your mouth. Peppermint extract is key here; it imparts an authentic mint flavor without overpowering. Using softened butter allows for an easier mix, achieving a smooth texture. If you're looking for a milder mint flavor, feel free to reduce the peppermint extract slightly.

Essential Tips for Success

When melting chocolate for the topping, using a double boiler method is highly recommended. This ensures gentle heat distribution, preventing the chocolate from seizing or burning. Stir continuously until the chocolate mixture is glossy and smooth; a well-melted chocolate will offer a beautiful finish to your bars. If your chocolate does seize, a few drops of warm water can sometimes salvage it, but manage that carefully to avoid a gritty texture.

If you're short on time but want to impress, consider making these bars in advance. Once cut into squares, they can be stored in an airtight container in the refrigerator for up to a week. Freezing is also an option; just ensure they're separated by parchment paper to prevent sticking. Allow them to thaw in the fridge before serving to maintain both texture and flavor without compromising quality.

Ingredients

Gather the following ingredients before you start:

Base Layer

1 cup crushed digestive biscuits
1/2 cup unsweetened cocoa powder
1/2 cup sweetened condensed milk
1/4 cup melted butter

Mint Filling

1 cup powdered sugar
1/4 cup unsweetened cocoa powder
1/2 tsp peppermint extract
2 tbsp softened butter

Chocolate Topping

200g dark chocolate, chopped
1 tbsp coconut oil

Make sure to check for freshness in your ingredients!

Instructions

Follow these steps carefully to create your Chocolate Mint Slice Bars:

Prepare the Base

In a medium bowl, combine the crushed digestive biscuits, cocoa powder, sweetened condensed milk, and melted butter. Mix until well combined. Press the mixture into the bottom of a lined square baking dish and refrigerate for 10 minutes.

Make the Mint Filling

In another bowl, beat the powdered sugar, cocoa powder, peppermint extract, and softened butter until creamy. Spread the mint filling evenly over the chilled base layer and refrigerate again for 10 minutes.

Prepare the Chocolate Topping

Melt the dark chocolate with coconut oil in a heatproof bowl over simmering water, stirring until smooth. Pour the melted chocolate over the mint filling, smoothing it out with a spatula, and then refrigerate until fully set, about 10 minutes.

Cut and Serve

Once set, lift the bars from the dish using the parchment paper, cut into squares, and enjoy your delightful Chocolate Mint Slice Bars!

Enjoy sharing your delicious creation with friends and family!

Pro Tips

For an extra touch, you can garnish the bars with chopped fresh mint leaves or a sprinkling of cocoa powder before slicing.

Serving Suggestions

These Chocolate Mint Slice Bars are versatile when it comes to serving occasions. For a festive touch, garnish them with crushed peppermint candies or a sprinkle of cocoa powder before cutting. Pair them with a strong coffee or a scoop of vanilla ice cream for a delightful dessert that balances the minty sweetness with creamy richness. It’s a wonderful way to elevate your presentation while adding complementary flavors.

For parties, these bars can be arranged on a platter with other desserts. They cut nicely into squares or rectangles, making them easy to grab and enjoy. Consider pairing them with a chocolate or mint-infused beverage for a cohesive theme. Alternatively, wrap individual pieces in decorative paper for a charming party favor that your guests can take home.

Ingredient Variations

If you're looking to experiment, you can replace the digestive biscuits with graham crackers or Oreo cookies for a unique flavor profile. For a gluten-free version, use gluten-free digestive biscuits. Swap out the dark chocolate with milk or white chocolate if you prefer a sweeter topping. Each variation will change the flavor balance, allowing you to customize this recipe to suit your preferences.

Mint lovers may enjoy adding a layer of crushed mint candies in the filling for added texture and bursts of mint flavor. For an adult twist, a splash of peppermint schnapps can be mixed into the filling instead of extract. Just remember to reduce the amount of powdered sugar slightly to balance the sweetness. These variations can elevate an already delicious bar to new heights.

Questions About Recipes

→ Can I use a different type of cookie for the base?

Yes, you can substitute digestive biscuits with Graham crackers or shortbread cookies.

→ How long do these bars last?

Stored in an airtight container in the refrigerator, they can last up to a week.

→ Is there a way to make this dessert dairy-free?

Absolutely! Use dairy-free sweetened condensed milk and dark chocolate to create a dairy-free version.

→ Can I freeze the Chocolate Mint Slice Bars?

Yes, you can freeze them for up to 3 months. Just make sure to wrap them tightly!