5 from 1 vote
Landscape image chocolate slice on ceramic blue plate and white wood background
Thermomix Chocolate Weetbix Slice
Prep Time
10 mins
Total Time
10 mins

Weetbix slice is one of those classic lunchbox treats.  I've revamped the recipe and made a Thermomix Chocolate Weetbix slice which is "no bake" and has some delicious modifications. I promise your kids will never guess how much goodness is in one square.

Course: Lunchbox, Slice, Snack
Cuisine: Australian
Keyword: Chocolate Slice, Healthy snack, Kids Snack, Lunchbox, Thermomix Slice
Servings: 48 pieces
Calories: 131 kcal
Author: Julie Carlyle
  • 265 g Weetbix approx 18
  • 160 g butter cut in cubes *not margarine
  • 1 tsp vanilla paste
  • 15 g Dutch process cocoa
  • 250 g condensed milk
  • 45 g shredded coconut *plus extra to garnish if desired
  • 200 g dark chocolate bits
  • 160 g Pepita, sunflower, pine nut and sultana seed blend
Ganache Topping
  • 200 g milk chocolate broken into cubes
  • 3 Tbs pouring cream
  1. Place Weetbix in TM bowl. Blitz 4 sec/Speed 7.

  2. Remove Weetbix from the TM and reserve for later.

  3. Without cleaning the bowl add butter, vanilla, cocoa powder and condensed milk. Heat 4 min/Varoma/Speed 2. 

  4. Add coconut, choc bits, seed and sultana mix and reserve Weetbix. Combine 1 min/Speed 2.5 (Reverse Blade).

  5. Line a slice tray with aluminium foil.

  6. Place the slice mixture into the tray and press down firmly. Refrigerate.

  1. Add the chocolate and cream to a clean glass dish. Microwave in 20-second bursts until melted, stirring in between.

  2. Pour the chocolate topping over the slice. Refrigerate for one hour or until required.

Recipe Notes

To make this a lighter healthier slice the chocolate topping can be reduced to just a drizzle of chocolate or omitted entirely.

Conventional Method

If you don't have a Thermomix you can still make this slice by hand.

Crush the Weetbix by hand into a large bowl.

In a smaller bowl add butter, condensed milk and vanilla. Place in the microwave for one minute and stir until melted and combine.

Add the cocoa, sultana and seed and chocolate bits to the Weetbix. Pour over the butter mixture.

Combine the ingredients with a wooden spoon.

Place the mixture into the prepared slice dish. Refrigerate. 

Nutrition Facts
Thermomix Chocolate Weetbix Slice
Amount Per Serving
Calories 131 Calories from Fat 72
% Daily Value*
Fat 8g12%
Saturated Fat 4g20%
Cholesterol 10mg3%
Sodium 68mg3%
Potassium 129mg4%
Carbohydrates 12g4%
Fiber 2g8%
Sugar 7g8%
Protein 2g4%
Vitamin A 245IU5%
Vitamin C 0.2mg0%
Calcium 25mg3%
Iron 2.5mg14%
* Percent Daily Values are based on a 2000 calorie diet.