Australian · Baking

Mars Bar Slice

Chopped Mars Bars melted with butter and stirred through puffed rice, pressed into a tin, topped with melted chocolate and chilled. No baking, and it is very sweet.

Not yet ratedThis recipe has no ratings yet 20 min hands on plus 1 hr Setting Serves 16 servings Easy
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How to Make Mars Bar Slice

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  1. Line a 20 cm square tin with greaseproof paper, leaving an overhang on two sides.

  2. Melt the butter and chopped Mars Bars in a medium saucepan over low heat, stirring constantly, for 5 minutes, until smooth.

  3. Take the pan off the heat and stir in the puffed rice until it is evenly coated.

  4. Press the mixture firmly into the tin with the back of a spoon and smooth the top.

  5. Melt the chocolate and oil together in a bowl over a pan of barely simmering water, or in the microwave in 30-second bursts, stirring in between.

  6. Pour the chocolate over the base and spread it to the edges.

  7. Refrigerate for at least 1 hour, until firm, then lift out with the paper and cut into 16 squares with a hot knife.

Tips for Making Mars Bar Slice

  • Melt the bars over low heat and stir all the time. Caramel scorches fast, and a burnt taste is impossible to remove.
  • Press the mixture down firmly. A loose base crumbles when cut, whereas a packed one stays together.
  • Cut with a hot knife. Dip it in hot water and wipe it between cuts, and the chocolate does not crack.

What to Serve with Mars Bar Slice

  • A cup of tea
  • A glass of cold milk
  • Fresh strawberries

Storing & Reheating Mars Bar Slice

Keeps in an airtight container in the fridge for up to 2 weeks. Freeze for up to 3 months.

Mars Bar Slice FAQ: Common Questions

How long does Mars Bar Slice take to make?

About 20 minutes of hands-on work — 15 minutes of preparation and 5 minutes of cooking — plus 1 hour of Setting, so allow 1 hour 20 minutes from start to finish. The recipe serves 16.

What are the key tips for making Mars Bar Slice?

Melt the bars over low heat and stir all the time. Caramel scorches fast, and a burnt taste is impossible to remove. Press the mixture down firmly. A loose base crumbles when cut, whereas a packed one stays together. Cut with a hot knife. Dip it in hot water and wipe it between cuts, and the chocolate does not crack.

What should I serve with Mars Bar Slice?

A cup of tea; A glass of cold milk; Fresh strawberries.

Can Mars Bar Slice be made ahead or frozen?

Keeps in an airtight container in the fridge for up to 2 weeks. Freeze for up to 3 months.

Is Mars Bar Slice suitable for a special diet?

This recipe is vegetarian and no added sugar. Those labels are checked against the ingredient list, so a dish is only marked when nothing in it contradicts the claim.

How many calories are in Mars Bar Slice?

About 200 kcal per serving, with 2 g protein, 21 g carbohydrate and 12 g fat. The figures are calculated from the ingredient list and are an estimate.

Mars Bar Slice Nutrition

Per serving, calculated from the ingredient list. Treat these as an estimate — brands and cuts vary.

200Calories
2gProtein
21gCarbs
12gFat
0gFibre
15gSugar
70mgSodium

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Written and tested by Turab

One person, one kitchen — no test kitchen, no team. How every recipe on this site is checked before it goes up.