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Member recipe

Mars Bar Flapjack slices

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(1 ratings)

Member recipe by


Serves 1 - 32 Squares

Easy tray-baked flapjacks, based on a recipe originally from an old Sainsburys Magazine

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  • For the base
  • 25g plain flour
  • 110g porridge oats
  • 150g light brown soft sugar
  • 1/2 tsp bicarbonate of soda
  • 150g butter, softened and cubed
  • 1 medium egg
  • For the topping
  • 225g milk chocolate
  • 4 Mars bars, chopped
  • 150ml double cream


    1. Mix flour, oats, sugar and bicarbonate of soda in a food processor until it looks like a crumble mix, but not too fine.
    2. Add butter and egg to dry mixed ingredients and mix until completely incorporated.
    3. Put 3/4 of the flapjack mix in a 22x33cm baking tray lined with baking parchment.
    4. Melt the milk chocolate in a bain marie, or a bowl set over a pan of simmering water.
    5. Spread the melted chocolate over the flapjack mix and refrigerate until set and hard
    6. Warm the cream with the chopped Mars bars until melted. Whisk until creamy. Pour over the flapjack and hardened chocolate.
    7. Crumble the remainder of the flapjack mix over the top evenly.
    8. Bake for 25 minutes at Gas Mark 4/180°C or until golden brown.
    9. Refrigerate for 2 hours to cool, and cut into 32 squares.

Comments, questions and tips

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29th Oct, 2013
Great comfort food but incredibly fatty with pools of grease lying on top after cooking which I soaked up with kitchen roll. Perhaps I made it incorrectly. I also had trouble getting it to set and had to put it back in the oven for a further ten minutes. But when all said and done - delicious. My son took it back to University and all his friends loved it.
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21st Jul, 2018
I have been making this for years but couldn't find recipe so looked it up on line. The crumble mixture did not work, it was far too wet and I eventually found my paper recipe and it should be 225g flour and not 25g.