Mars Bar Slice Recipe

Mars Bar Slice
  • Prep time: 1 Hour & 5 Minutes
  • Cook time: 5 Minutes
  • Total time: 1 Hour & 10 Minutes
  • Makes: 16


  • 3 Mars Bars
  • 3-4 cups rice bubbles (Rice Krispies)
  • 25 g (0.9 oz) unsalted butter


  1. In a microwavable bowl, add the mars bars and the butter.
  2. Place in the microwave and heat for about 2-3 minutes or until melted.
  3. Add the rice bubbles to the bowl and mix.
  4. In a slice pan, add the rice bubble mixture. Use the back of the spoon to smooth the mixture out.
  5. Place in the fridge to cool for an hour.
  6. Cut into slices.
  7. Serve & Enjoy.

Recipe Tips

  • The minimum cooling time is one hour. If you can leave it for longer, then I highly recommend you do.
  • If you don’t mind spending a bit more time on this recipe, you can melt 250g (9 oz) milk chocolate with a tablespoon of vegetable oil in a double boiler. Once melted, pour the chocolate mixture over the top of the slice, so you get a lovely chocolate topping. Allow to cool for about an hour or two in the fridge.
  • An alternative to using a microwave is to melt the butter and Mars bars in a bowl over a saucepan of simmering water. It is important not to let the bowl touch the water. This process will take a bit longer and make more washing up, but you will get the same result.

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