Total Time
Prep 1 hr
Cook 0 mins

This is a very very rich chocolate bar, Unfortunately once you have tasted this slice you can not leave it alone, It was given to me about 15 years ago by a friend. The reason for the name if the slice is because a mother in laws tongue is usually bitter sweet.

Ingredients Nutrition

  • 4 ounces butter (it has to be butter)
  • 4 ounces golden syrup
  • 4 ounces cocoa
  • 4 ounces icing sugar (powdered sugar)
  • 4 ounces of good dark chocolate
  • 8 ounces digestive biscuits
  • 8 ounces milk chocolate, for top of slice


  1. Melt the butter and dark chocolate with the syrup in a pan.
  2. When melted, stir in icing sugar and cocoa.
  3. Be sure to sieve the cocoa and the icing sugar.
  4. Coarsly crush the digestive biscuits and stir into syrup mixture. Mix well.
  5. Press mixture into a greased tin approx 21x21x3.5cm. Leave mixture in tin and leave in the fridge for a few hours.
  6. When slice is properly chilled, melt the milk chocolate and spread onto the top of the slice. When milk chocolate has set, cut slice into fingers. ( Tongues )
  7. You should get about 25 tongues.
  8. Enjoy.
  9. Whitby Tart.


Most Helpful

WOW! This was really easy & great tasting. I must admit I did not use dark chocolate, I used Milk Chocolate. The family LOVED it, maybe a little too much! I will definately make these again. Thank you.

Bellamarie. July 06, 2008

For once I was able to purchase the two ingredients that have usually been hard to find before ~ golden syrup & digestive biscuits ~ although I realize I could have come up with suitable substitutes! And, when finished with the recipe, WHAT A WONDERFUL CHOCOHOLIC FIX! Definitely will be keeping this recipe on hand from now on! Thanks so much! [Tagged, made & reviewed in the Zaar Chef Alphabet Soup Game]

Sydney Mike May 12, 2008

Oh my goodness! These bars are incredibly dangerous - - because I want to eat them all!! LOL I found golden syrup and digestive biscuits in the British imports section of our grocery so was able to follow this recipe to the letter (except that I also used a little extra chocolate on the top - about 9.5 oz total). I used Ghirardelli 60% dark chocolate and a mixture of Lindt & Dove milk chocolate for the top. Thank you soooo much for the recipe Whitby Tart!

flower7 May 03, 2008

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