I used to have weet-bix slice in my lunch box when I was a kid! Gosh it was delicious! There’s nothing quite like homemade slice! There is nothing wrong with a small piece of slice, every now and then, but due to it’s high energy density (mostly from lots of sugar and butter) and low amounts of nutrition, it’s not a food that should take a prime position in the diet.

One of the things I like to do, is tweak traditional recipes and boost their healthiness. It’s not about changing the food so I can eat more of it or eat it more often. It’s just about making an effort to use as many meals and snacks as I can as an opportunity for nourishment. These foods are still treated as ‘sometimes’ foods, especially when chatting to the kids, however if I can add in some whole foods, boost the fibre, decrease the sugar, decrease the saturated fat and still keep the same amount of yumminess then… winner!

This recipe has wholemeal flour, some of which was substituted out for oats, to boost the fibre. I decreased the sugar and the butter and instead added some milk. I swapped cocoa for cacao. The end result is 2g of fibre and only 2 tsp of sugar per piece. If you want to reduce the sugar even more (down to only 1 tsp), omit the icing all together or drizzle a small amount of melted dark chocolate over the top!

weetbix slice
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4.18 from 34 votes

Oaty Weet Bix Slice

A healthier whole foods twist on an old favourite!
Prep Time5 mins
Cook Time25 mins
Refrigeration1 hr
Total Time30 mins
Course: Snack
Cuisine: Vegetarian
Keyword: cacao, chocolate, slice, weet-bix
Servings: 25 people
Calories: 137kcal


  • 3 Weetbix crushed
  • ¾ cup flour, wholemeal, self-raising
  • ¾ cup oats, rolled
  • 1 cup coconut, desiccated
  • 100 g butter melted
  • ¾ cup sugar, brown
  • ½ cup milk, any
  • ¾ cup sugar, icing
  • 2 tbsp cacao powder
  • 50 g butter
  • 1 tbsp water, boiling


  • Grease and line a slice tray with baking paper.
  • Mix crushed Weet-Bix, flour, oats, coconut and brown sugar in a bowl and combine with milk and 100g melted butter.
  • Press into slice tray and bake at 180C (170C fan forced) for 20 minutes.
  • When slice is cool, ice with chocolate glaze icing.


  • Melt butter and add to blended icing sugar and cacao. Mix well and gradually pour in water, beating well. 
  • Pour over slice and spread evenly.
  • Refrigerate to set.
  • Cut into 25 pieces.


Whole foods: 50%
1 serve of this recipe contains:
  • ½ serve carbohydrate 
  • ¾ serve fat 


Calories: 137kcal | Carbohydrates: 15g | Protein: 2g | Fat: 8g | Sodium: 39mg | Fiber: 2g

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