Chocolate Mint Slice Bars

Name: Chocolate Mint Slice Bars
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Yield: 12 bars
Ingredients: 1 cup crushed digestive biscuits; 1/2 cup unsweetened cocoa powder; 1/2 cup melted butter; 1/4 cup sugar; 1 cup powdered sugar; 1/4 cup unsweetened cocoa powder; 1/4 cup unsalted butter, softened; 1/2 teaspoon peppermint extract; 2 tablespoons milk; 200g dark chocolate, chopped; 2 tablespoons unsalted butter

Highlighted under: Baking & Desserts

I absolutely love making Chocolate Mint Slice Bars whenever I crave a delightful treat that combines the richness of chocolate with a refreshing hint of mint. This recipe has become a favorite in my household, especially during festive gatherings. The layers of creamy mint and chocolate create a perfect balance of flavors, and they look gorgeous when served. Plus, they are surprisingly easy to prepare, making them an ideal choice for both novice and experienced bakers alike.

Created by

Penelope Dawson

Last updated on 2026-01-13T05:10:24.391Z

When I first tried making Chocolate Mint Slice Bars, I was surprised by how easy it was to achieve that perfect creamy texture with a hint of mint. I experimented with different chocolate and mint ratios until I found the ideal combination that satisfied my taste buds. Using real mint extract adds a refreshing flavor that elevates the chocolate, and I recommend using high-quality dark chocolate for the best results.

Over the years, I've found that chilling the bars for a few extra minutes before cutting them into squares results in cleaner edges and enhances the overall presentation. This small step makes a big difference, and it always impresses my guests. Now, these bars are one of my go-to recipes for any celebration or simply when I need something indulgent!

        Why You Will Love This Recipe
        Rich chocolate flavor paired with refreshing mint essence
Creamy texture that creates a delightful melt-in-your-mouth experience
Perfect for sharing at parties or enjoying as a personal treat

      

Mastering the Layers

Creating distinct layers is essential for the Chocolate Mint Slice Bars’ signature look and taste. When mixing the biscuit base, be sure to press it firmly into the pan; this helps create a compact foundation that holds well once set. Aim for a thickness of about half an inch, ensuring that it cooks evenly. If you're using a different biscuit, like graham crackers, just adjust the sweetness according to your taste.

For the mint layer, the key is achieving a smooth consistency. Take care to beat the softened butter well with the powdered sugar and milk before adding the peppermint extract. This will ensure that the layer is both creamy and spreadable. If the mixture appears too thick, you can add an extra teaspoon of milk to help it spread more easily. A good way to tell it’s ready is when it holds its shape but is easily smoothed out.

The Chocolate Topping

When preparing the chocolate topping, it's crucial to melt the chocolate slowly to prevent burning. Using a heatproof bowl over simmering water, known as a double boiler, allows for gentle heating. Stir continuously until the chocolate is glossy and fully melted, which usually takes around 5-7 minutes. If you notice the chocolate starting to seize, immediately remove it from heat to cool slightly before stirring vigorously until smooth.

Adding butter to the dark chocolate not only enhances the flavor but also adds a lovely sheen to the topping. If you’re looking for a lower-fat option, you may substitute the butter with coconut oil, which will also impart a subtle flavor. However, keep the ratio equal to ensure the consistency remains velvety and pourable.

Ingredients

Gather these simple ingredients to make your delicious Chocolate Mint Slice Bars:

For the Base

1 cup crushed digestive biscuits
1/2 cup unsweetened cocoa powder
1/2 cup melted butter
1/4 cup sugar

For the Mint Layer

1 cup powdered sugar
1/4 cup unsweetened cocoa powder
1/4 cup unsalted butter, softened
1/2 teaspoon peppermint extract
2 tablespoons milk

For the Chocolate Topping

200g dark chocolate, chopped
2 tablespoons unsalted butter

Have everything ready? Let’s dive into the preparation!

Instructions

Follow these steps to prepare your Chocolate Mint Slice Bars:

Prepare the Base

In a mixing bowl, combine crushed digestive biscuits, cocoa powder, melted butter, and sugar. Stir until well combined, then press the mixture into a greased rectangular pan to form an even base.

Make the Mint Layer

In another bowl, mix powdered sugar, cocoa powder, softened butter, peppermint extract, and milk until smooth. Spread this mixture evenly over the biscuit base.

Prepare the Chocolate Topping

Melt the dark chocolate with butter in a heatproof bowl over simmering water, stirring until smooth. Pour the chocolate over the mint layer and spread evenly.

Chill and Serve

Refrigerate the bars for at least 30 minutes or until set. Once set, cut into squares and serve chilled.

Enjoy these delicious Chocolate Mint Slice Bars with your friends and family!

Pro Tips

For an added touch, sprinkle crushed peppermint candies on top of the chocolate layer before chilling. This gives a delightful crunch and visual appeal to your bars.

Storage Tips

After preparing your Chocolate Mint Slice Bars, store them in an airtight container in the refrigerator to maintain their freshness. They can be kept for up to a week. If you want to make them ahead of time, consider preparing the layers and assembling them a day in advance. This allows the flavors to meld, enhancing the overall taste experience.

For longer storage, these bars also freeze well. Cut them into squares, wrap each piece in plastic wrap, and place them in a freezer-safe container. They can be stored for up to three months. When ready to enjoy, simply thaw them in the refrigerator overnight for a perfect treat.

Variations to Try

Feel free to get creative with the flavors! Substitute peppermint extract with other extracts like orange or almond for a twist on the traditional recipe. You can also incorporate finely chopped nuts or seeds into the biscuit base for varying texture and added nutrition. Just be sure any additions don’t compromise the structural integrity of the bars.

For a festive touch, consider drizzling white chocolate over the top after the dark chocolate has set. This not only adds visual appeal but also introduces a contrasting sweetness that beautifully complements the richness of the chocolate and the freshness of the mint.

Questions About Recipes

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

Yes, you can substitute digestive biscuits with graham crackers or any similar biscuits.

→ Is it necessary to use dark chocolate?

While dark chocolate works best for balancing the mint flavor, you can use milk chocolate if you prefer a sweeter taste.

→ How long can these bars be stored?

The bars can be stored in an airtight container in the refrigerator for up to a week.

→ Can I make these bars vegan?

Yes, you can substitute butter with a vegan alternative and ensure the chocolate is dairy-free.