Chocolate Mint Slice Bars

Name: Chocolate Mint Slice Bars
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Yield: 12 bars
Ingredients: 1 cup crushed digestive biscuits; 1/2 cup unsweetened cocoa powder; 1/2 cup melted butter; 1/4 cup powdered sugar; 1 cup sweetened condensed milk; 2 cups powdered sugar; 1 teaspoon peppermint extract; Green food coloring (optional); 1 cup semi-sweet chocolate chips; 2 tablespoons vegetable oil

Highlighted under: Baking & Desserts

I love experimenting with flavors, and these Chocolate Mint Slice Bars are one of my favorite creations! The combination of rich chocolate and refreshing mint brings a delightful twist that's hard to resist. Each bite is a perfect balance of sweet and minty, making these bars the ideal treat for any occasion. I usually whip them up in less than an hour, and they never fail to impress family and friends. You can even modify the recipe to suit your taste, adding more or less mint depending on your preference.

Created by

Nora Ellis

Last updated on 2026-01-13T02:49:10.280Z

When I first decided to create these Chocolate Mint Slice Bars, I was looking for a dessert that would satisfy both chocolate lovers and those who enjoy a refreshing mint flavor. I found that the key is to use high-quality cocoa powder and fresh mint extract, which elevates the overall taste. The layers of chocolate and mint are not only beautiful but offer a delightful combination of textures, making each slice a true indulgence.

What I love most about this recipe is how simple it is! After baking the base, I let it cool and then whip up the creamy mint filling. I typically chill the bars overnight which gives the flavors a chance to meld beautifully. This patience rewards me with a dessert that pairs perfectly with coffee or tea and keeps everyone coming back for seconds!

        Why You Will Love These Bars
        Intense chocolate flavor complemented by refreshing mint
Creamy, melt-in-your-mouth texture
Easy to make and perfect for gatherings or as a personal treat

      

Perfecting the Base Layer

The base layer of these Chocolate Mint Slice Bars creates a satisfying crunch that contrasts beautifully with the creamy mint filling. Using crushed digestive biscuits gives a buttery flavor and a sturdy foundation. Ensure the biscuits are finely crushed to avoid any large chunks, which can disrupt the smooth texture. When mixing the ingredients, aim for a consistency that holds together when pressed down firmly in the baking dish. If you find the mixture too crumbly, a splash of milk can help bind it without compromising taste.

Another trick is to press the mixture firmly into the lined baking dish using the back of a measuring cup or your fingers, ensuring it's evenly distributed. I usually chill the base layer for about 15 minutes before adding the mint filling, which helps set the layer and prevents it from mixing with the filling. Make sure to use parchment paper to line the dish for easy removal, as this will simplify cutting the bars later.

Crafting the Mint Filling

The mint filling is the star of these bars, delivering a refreshing burst of flavor. Sweetened condensed milk plays an essential role here, providing both richness and a creamy texture. When combining the filling ingredients, mix them thoroughly until the powdered sugar is completely integrated. This step is crucial to avoid any lumps, which can affect the smooth texture of your finished bars. If you're aiming for a vibrant green color, start with a small drop of food coloring and mix until you achieve your desired shade.

Feel free to experiment with the mint flavor! If you prefer a stronger mint presence, increase the peppermint extract by small increments, tasting as you go. Just remember that a little goes a long way, so avoid overdoing it. Once the filling is spread over the base, smooth it out evenly, ensuring it reaches the edges of the dish. It’s best to chill the entire dish again for about 20-30 minutes before pouring the chocolate topping to allow the mint filling to set properly.

Ingredients

Gather the following ingredients to create these delicious bars:

Base Layer

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

Mint Filling

1 cup sweetened condensed milk
2 cups powdered sugar
1 teaspoon peppermint extract
Green food coloring (optional)

Chocolate Topping

1 cup semi-sweet chocolate chips
2 tablespoons vegetable oil

Ensure you have everything ready before you start!

Instructions

Follow these steps to create your Chocolate Mint Slice Bars:

Prepare the Base

In a mixing bowl, combine crushed digestive biscuits, cocoa powder, melted butter, and powdered sugar. Mix until well combined. Press the mixture into a lined 8x8 inch baking dish to form a firm base.

Make the Mint Filling

In another bowl, mix sweetened condensed milk, powdered sugar, peppermint extract, and green food coloring if desired. Spread this mixture evenly over the chilled base layer.

Add the Chocolate Topping

Melt the chocolate chips and vegetable oil together in a microwave or double boiler until smooth. Pour the melted chocolate over the mint filling and spread evenly. Refrigerate until set.

Cut and Serve

Once set, remove the bars from the baking dish and cut into squares. Enjoy your delicious Chocolate Mint Slice Bars!

Refrigerate any leftovers for a cool treat later!

Pro Tips

For added flair, consider drizzling white chocolate on top before serving. You can adjust the mint flavor based on your preference, starting with less and adding more if desired.

Storage and Make-Ahead Tips

These Chocolate Mint Slice Bars store beautifully, making them a fantastic make-ahead treat. Once they are completely set, cover the dish in an airtight container and refrigerate for up to a week. If you want to slice them in advance, be sure to use a sharp knife dipped in warm water for clean cuts, preventing any tearing of the chocolate topping or mint filling. For longer storage, you can freeze them; simply place individual bars in a freezer-safe bag with parchment paper between layers to prevent sticking, and they can last for up to three months.

When you're ready to serve frozen bars, remove them from the freezer and let them thaw in the refrigerator for a couple of hours. This ensures they retain their texture and flavor, as microwaving or rapid thawing can result in a less pleasant mouthfeel. These bars are perfect for lunchbox treats or a sweet pick-me-up whenever you need a chocolate fix!

Variations and Substitutions

There are plenty of ways to customize this recipe based on your dietary preferences or pantry staples. For a gluten-free option, substitute the digestive biscuits with gluten-free biscuits or crushed nuts mixed with a bit of cocoa powder. If you're looking for a lighter version, you can swap the sweetened condensed milk with a mixture of Greek yogurt and honey for a tangy twist. However, keep in mind that a slight adjustment in sweetness might be necessary since Greek yogurt is not as sweet as condensed milk.

For additional texture, consider incorporating crushed mint candies or chocolate chips into the mint filling before spreading it onto the base layer. This adds a delightful crunch and enhances the minty experience. You can also experiment with different types of chocolate for the topping; dark chocolate or white chocolate provide unique flavors that can highlight the mint layer beautifully. No matter how you choose to modify, these bars are versatile and forgiving!

Questions About Recipes

→ Can I use different types of chocolate?

Absolutely! You can use dark chocolate for a richer flavor or even white chocolate for a sweeter taste.

→ How long do these bars stay fresh?

They can be stored in an airtight container in the refrigerator for up to one week.

→ Can I freeze these bars?

Yes! Just wrap them tightly in plastic wrap and store in the freezer for up to three months.

→ Is there a substitute for sweetened condensed milk?

You can try making your own by simmering milk and sugar, or use coconut milk for a dairy-free option.