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5.0 from 3 votes

Peppermint slice

This easy no bake treat has a delicious mix of chocolate, bright peppermint and crumbly cookie base.

Prep Time
15 mins
Cook Time
15 mins
chilling time (approx)
2 hrs
Total Time
20 mins
Servings: 16 pieces,
Calories: 344 kcal
Course: Snacks
Cuisine: Australian , British

Ingredients

For base
  • 8 oz digestive biscuits or graham crackers (see notes)
  • 4 oz unsalted butter (4oz is 1 stick)
  • 2 tablespoon unsweetened cocoa powder
  • 1 tablespoon sugar
For peppermint filling/icing
  • 3 cups confectioner's sugar icing sugar
  • 2 tablespoon unsalted butter softened, or melted then cooled
  • 2 teaspoon peppermint extract can use a little more or less to taste
  • 2 tablespoon hot water approximate, or a little more if needed
  • 2 drops green food coloring can omit or use a little more
For chocolate topping
  • 10.5 oz dark chocolate or eg half dark, half semisweet
  • 2 tablespoon vegetable oil or other neutral oil, optional (see notes)

Instructions

    Cup of Yum
  1. Lightly butter a baking pan/tin that's 9 x 9 in (23 x 23cm) and at least 1 in (2.5cm) deep. Line it with parchment, at least on the bottom and two sides with slight overhang so you have something to lift out when done. The butter helps the parchment hold in place.
  2. Crush the cookies/biscuits in a food processor. They should be relatively fine crumbs. Add the cocoa powder and sugar and pulse to mix. Melt the butter (I find microwave works well, around 20-30 seconds at a time then stir, but can also do on the stove) and add. Blend so everything is well combined. Scrape down and pulse again if needed. If you don't have a food processor, you can also crush the cookies in a freezer bag with eg a rolling pin, then mix everything in a bowl.
  3. Put the mixture into the prepared pan and press it down evenly, flattening the top with a spatula or wooden spoon. Refrigerate for at least 30 minutes before adding the frosting/icing layer.
  4. When ready, place the confectioner's sugar into a bowl and add the softened butter, peppermint extract and green coloring if using. Add most of the hot water and mix well, adding a little more water if needed. It should be relatively thick but stirable/spreadable. Scoop the mixture over the chilled base and spread evenly, taking care not to mix crumbs into the icing. Chill for around 30 minutes or more to firm up.
  5. Melt the chocolate and oil together (I usually place in the microwave for 30-40 second intervals, stir, heat again then stop once it is almost melted and melt the last using the heat in the dish). Pour the chocolate over the peppermint layer and spread evenly, right to the edges. Try not to over work the chocolate as you will just make it more uneven as it firms up.
  6. Place the pan in the fridge again to harden for at least 30 minutes, if not nearer an hour, until the top is dry and firm. Use the parchment around the edges to lift the whole block from the pan and then cut into pieces. You may find it helpful to score first and/or use a warmed knife to help cut the chocolate layer without it cracking.

Notes

  • In the UK, digestive biscuits are about the best for this, and in the US if those are not available, then graham crackers work well. In Australia and elsewhere, if you can't get digestives then Marie biscuits or other relatively plain biscuit/cookie is your best choice.
  • You don't have to include oil in the topping, but it does help to reduce the chances of the chocolate cracking as you slice. Alternatively, dip or run your knife in boiling water in between cuts to help cut through the chocolate layer without too many cracks.
  • I used a 9x9in pan for this, but 8x8in (20x20cm) will also work with just slightly thicker layers.
  • You can make the peppermint layer with room temperature rather than hot water, but it will be a bit harder to spread. You more have to press it towards the edges. 

Nutrition Information

Calories 344kcal (17%) Carbohydrates 43g (14%) Protein 3g (6%) Fat 18g (28%) Saturated Fat 10g (50%) Polyunsaturated Fat 2g Monounsaturated Fat 5g Trans Fat 0.3g Cholesterol 20mg (7%) Sodium 79mg (3%) Potassium 170mg (5%) Fiber 3g (12%) Sugar 31g (62%) Vitamin A 229IU (5%) Calcium 28mg (3%) Iron 3mg (17%)

Nutrition Facts

Serving: 16pieces,

Amount Per Serving

Calories 344

% Daily Value*

Calories 344kcal 17%
Carbohydrates 43g 14%
Protein 3g 6%
Fat 18g 28%
Saturated Fat 10g 50%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 5g 25%
Trans Fat 0.3g 15%
Cholesterol 20mg 7%
Sodium 79mg 3%
Potassium 170mg 4%
Fiber 3g 12%
Sugar 31g 62%
Vitamin A 229IU 5%
Calcium 28mg 3%
Iron 3mg 17%

* Percent Daily Values are based on a 2,000 calorie diet.