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Home » Baking

Mint Chocolate Fridge Cake (no-bake)

May 9, 2018 by Jane Saunders 6 Comments

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MINT CHOCOLATE FRIDGE CAKE (AKA Mint Aero Slice)
MINT CHOCOLATE FRIDGE CAKE (AKA Mint Aero Slice)

Mint Chocolate Fridge Cake, (aka tiffin or Mint Aero Slice), makes a decadent departure from the classic no-bake chocolate cake. This rich, fudgy cake is loaded with chocolate, butter, biscuits and mint chocolate treats. Utter bliss.

Mint Chocolate Fridge Cake cut into slices.

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The inspiration behind this Mint chocolate fridge cake comes directly from a birthday party.

Normally around April, I tell you all about my baking exploits during late March when my children have their birthdays plus a party each and I end up baking my body weight in cakes.

Well, this year, things were a little different. The star of the birthday season this year was a baking party. That was 4 girls who’ve been friends since they were 5 taking over my kitchen for numerous hours.

Between them, they baked enough sweet goods to stock a coffee shop. Nestled amongst cookies, muffins, bourbon biscuits, cornflake clusters and flapjack was a chocolate refrigerator cake.

Oh my. I can’t recall the last time I ate a piece of chocolate fridge cake, but it was good. So good, in fact, that it got my mind racing. And, whenever chocolate is involved my mind always speedways itself straight to mint. 

I’m a kid in disguise really.

A mint aero slice with a small bottle of mint.

Several weeks later and I was ready to trial my notion. A straight chocolate fridge cake includes chocolate, butter and biscuits. Sometimes a little honeycomb might find it’s way into the mix, or some dried fruit and nuts.

But I wanted my Mint Chocolate Fridge Cake to have a mighty minty bite. So I went all out. I’ve got two types of mint biscuits in here along with two varieties of mint chocolate.

Assorted chocolate and chocolate biscuits cut into pieces on a wooden board.

What you will need

My blend of goodies in this mint chocolate fridge cake includes:

  • Viscount biscuits – a plain biscuit with a peppermint cream top all smothered in chocolate
  • Mint Oreos – a green peppermint cream sandwiched between dark chocolate cookies
  • Fry’s Peppermint Cream – powerful white peppermint fondant laced in dark chocolate
  • Mint Aero Bubbles – sweet, bright and very green

I chose this mix for the minty flavours, variation in shapes and different colours. I know that these products are not all available worldwide, but I’m hoping you’ll be able to lay your hands on similar products (see suggestions further down).

Just make like for like substitutions – biscuit for biscuit and chocolate for chocolate in the same weights.

Slices of Mint Chocolate Fridge Cake with old fashioned kitchen scales behind.

Instructions

I know it’s tempting to run off to the supermarket, scoop your stash of minty goodies and get mixing, but I’ve got a big piece of advice to serve up before you make a start. You must respect your ingredients.

A lot of these minty treats will not stand up to being mixed ferociously and some do not even like heat. Instinct told me that the Aero Bubbles would rebel and end up in little green piles if I even thought about mixing them directly into the chocolate batter.

Here are my instructions for making this mint Aero slice style chocolate fridge cake. I suggest you read through fully before starting and follow them exactly

  • Grease a small loaf tin (1kg) and line it neatly with baking parchment
  • Put the butter, dark chocolate and syrup into a medium heatproof mixing bowl and suspend over a pan of barely simmering water (ensure the water does not touch the bottom of the bowl). Stir until melted
  • Crack the egg into a jug, whisk briefly and stir into the chocolate batter. Remove the bowl from the heat and let cool for 15 minutes, stirring once or twice
  • Break the biscuits into chunks (6-8 per biscuit) – scoop all the chunks and crumbs into a bowl
  • Chop the peppermint creams into pieces but leave the Aero Bubbles intact
  • When ready, tip the biscuit pieces into the chocolate batter and briefly stir with a large metal spoon to combine – 4 or 5 turns should be sufficient – avoid over-mixing
  • Do not mix the peppermint cream chocolate or the mint aero into the batter – they will melt and turn into a gooey (but still delicious) mess
  • Instead, spoon ¼ of this mix into the base of the loaf tin, ensuring the mix reaches the corners of the tin then spread ⅓ of the peppermint cream chunks and ⅓ of the Aero Bubbles over the base
  • Top with another ¼ of the chocolate batter – take care to ensure that the batter reaches the corner and the layer of peppermint chocolates are covered – use the back of a small metal spoon to guide the mix into empty spaces 
  • Repeat with another ⅓ of the peppermint creams and Aero Bubbles and top with another ¼ of chocolate batter
  • Spread the remaining mint chocolates on the top and cover completely with the final ¼ of the batter. Carefully level using the back of a metal spoon
  • Wrap the tin in clingfilm and transfer to the fridge for around 6 hours to set
  • When ready, carefully remove from the loaf tin, remove the parchment and cut into 10-12 slices

It only takes a few more minutes to layer this cake up gradually in a tin and it’s well worth that extra effort to retain those bubbly green balls in this visually striking mint Aero slice chocolate fridge cake.

Ingredient Substitutions

I’ve used ingredients that are readily available in the UK. Here are a few suggestions that should make good alternatives depending where else in the world you are based:

Biscuits

  • Mint Thins
  • Pepperidge Farm Mint Chocolate Milano Cookies
  • Tim Tam Chocolate Mint Biscuits

Chocolate

  • Ghirardelli Dark Chocolate Mint Squares
  • DOVE Dark Chocolate Mint Swirl Candy Bar
  • Nestle Aero Mint Chocolate Bar
  • Andes Candy Creme de Menthe
  • York Peppermint Patties
  • After Eight Mints

If you can get hold of mint Aero – either balls or bar – do get them – the colour and bubbly texture really do add something to this Mint Chocolate Fridge Cake (aka Mint Aero Slice).

Mint Chocolate Fridge Cake served with milk.

How to Store and Serve

Ensure you wrap this cake well before storing in the fridge since the aroma of mint carries easily to other food items.

It needs a minimum of 6 hours to set in the fridge but lasts for up to 1 week, so it’s a great recipe to make in advance.

Once set this Mint Chocolate Fridge Cake can be sliced into small squares (or large bars) and pulled out of the fridge as and when required (24/7 in my case).

Do keep it refrigerated until ready to serve and return any leftovers to the fridge since it does soften significantly at room temperature.

Each slice of Mint Chocolate Fridge Cake delivers exactly what you would expect – rich, fudgy, chocolatey bites of bliss loaded with crunchy biscuits and intense bursts of peppermint.  Immensely and intensely fun. Just what my 5-year-old self would have been hankering after.

More Chocolate Recipes to Try

  • Easy Chocolate Sponge Cake
  • Chocolate Caramel Shortbread Bars
  • Ferrero Rocher Cheesecake (No-Bake)
  • Chocolate Pumpkin Spice Granola
  • Baileys Chocolate Mousse with Coffee
Mint Chocolate Fridge Cake (Mint Aero Slice) - featured image-2151

Mint Chocolate Fridge Cake

Jane Saunders
Mint Chocolate Fridge Cake, or tiffin, makes a decadent departure from the classic no-bake chocolate cake. This rich, fudgy cake is loaded with chocolate, butter, biscuits and mint chocolate treats. Utter bliss.Please DO NOT mix the minty chocolates into the hot chocolate mix. 
5 from 4 votes
Print Pin Rate
Course: Dessert
Cuisine: Worldwide
Prep Time: 20 minutes
Cook Time: 0 minutes
Total Time: 20 minutes
Servings: 10 servings
Calories: 216kcal
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Ingredients

  • 100 g/ ⅗ oz Butter
  • 300 g/ 10 1.2 oz Dark Chocolate (around 60% is fine)
  • 1 tablespoon Golden syrup (light corn syrup)
  • 1 Egg
  • 160 g/ 5 ½ oz Mint biscuits (I used 6 Viscounts & 6 Mint Oreo biscuits)
  • 100 g/ 3 ½ Fry’s Peppermint Creams (or other mint fondant cream in dark chocolate)
  • 80 g/ 3 oz Mint Aero Bubbles (or other Mint chocolate)

Instructions

  • Grease a small loaf tin (1kg) and line it neatly with baking parchment
  • Put the butter, dark chocolate and syrup into a medium heatproof mixing bowl and suspend over a pan of barely simmering water (ensure the water does not touch the bottom of the bowl). Stir until melted
  • Crack the egg into a jug, whisk briefly and stir into the chocolate batter. Remove the bowl from the heat and let cool for 15 minutes, stirring once or twice
  • Meanwhile break the biscuits into chunks (6-8 per biscuit) – scoop all the chunks and crumbs into a bowl
  • Chop the peppermint creams into pieces but leave the Aero Bubbles intact
  • When ready, tip the biscuit pieces into the chocolate batter and briefly stir with a large metal spoon to combine – 4 or 5 turns should be sufficient
  • DO NOT MIX THE PEPPERMINT CREAM CHOCOLATE OR THE AREO BUBBLES INTO THIS BATTER (sorry to shout but this is really important)
  • Spoon ¼ of this mix into the base of the loaf tin, ensuring the mix reaches the corners of the tin
  • Spread ⅓ of the peppermint cream chunks and ⅓ of the Aero Bubbles over the base and top with another ¼ of the chocolate batter. Take care to ensure that the batter reaches the corner and the layer of peppermint chocolates are covered – use the back of a small metal spoon to guide the mix into empty spaces 
  • Repeat with another ⅓ of the peppermint creams and Aero Bubbles and top with another ¼ of chocolate batter
  • Spread the remaining mint chocolates on the top and cover completely with the final ¼ of the batter. Carefully level using the back of a metal spoon
  • Wrap the tin in clingfilm and transfer to the fridge for around 6 hours to set
  • When ready, carefully remove from the loaf tin, remove the parchment and cut into 10-12 slices
  • Store in the fridge for up to 1 week. Remove from fridge 15 minutes before serving

Nutrition Per Serving (Approximate)

Calories:216kcal | Carbohydrates:20g | Protein:2g | Fat:15g | Saturated Fat:8g | Cholesterol:38mg | Sodium:155mg | Potassium:115mg | Fiber:2g | Sugar:13g | Vitamin A:614IU | Vitamin C:3mg | Calcium:30mg | Iron:2mg
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  1. Lou | Crumbs and Corkscrews

    February 28, 2020 at 10:28 pm

    5 stars
    Oooooo Viscount biscuits! I haven’t seen them in SO long – I’m going to have to track some down now, not just so I can keep a packet all to myself but so I can make this fridge cake too. It looks fantastic and I’m loving the Mint Aero Bubbles too!

    Reply
    • Jane Saunders

      March 01, 2020 at 2:16 pm

      Hey there Lou. I don’t often see Viscounts in mainstream supermarkets these days but can often pick them up in the £1 stores, B&M bargains and such places. I never see the orange ones though.

      Reply
  2. Tues

    May 10, 2018 at 1:56 pm

    5 stars
    This cake is gorgeous- I love that it uses peppermint creams!… The chocolate and mint combo is one of my favorite combos!!

    Reply
    • Jane Saunders

      May 10, 2018 at 3:44 pm

      Ah thanks – I’ve only met a few people who are not into mint-chocolate. In my view it’s hard to top.

      Reply
  3. Liz

    May 10, 2018 at 12:33 pm

    5 stars
    This is like the best summer dessert recipe!! So perfect for really hot summer days! 🙂

    Reply
    • Jane Saunders

      May 10, 2018 at 1:15 pm

      Thanks Liz.

      Reply

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