Bright, buttery and full of crunchy chocolate Smarties, these Thermomix Smartie Cookies are a fun treat that everyone will love. They mix up in minutes and bake to soft, chewy perfection every time.

Jump to:
Why You'll LOVE This Recipe
- They're quick and reliable.
- Kid-approved and freezer friendly - perfect for lunchboxes or last minute treats.
Recipe Ingredients

Please see the recipe card at the bottom of this post for the full ingredients and quantities.
Notes on the key ingredients:
- Unsalted butter: Chilled and cubed - cold butter helps prevent the cookies from spreading.
- Egg: Use a large egg at room temperature.
- Smarties: Substitute M&Ms if you don't have Smarties.
Variations
- Add 50g of white chocolate chips for an extra sweet twist.
Step-by-Step Directions
These step-by-step Thermomix photos are here as a visual guide. You'll find all the exact times, temperatures, and quantities in the printable recipe card below.

- Step 1: Soften the butter briefly in the Thermomix until spreadable.

- Step 2: Beat in the sugars until creamy, scraping the bowl well so everything blends evenly.

- Step 3: Mix in the egg and vanilla until smooth. The egg may curdle, but will come together later on.

- Step 4: Add the dry ingredients and blend just enough for the dough to come together. Fold in the Smarties with a spatula so they keep their shape.

- Step 5: This is optional, but I like to transfer the dough to a regular mixing bowl so that it's easier to scoop out mixture without the blades getting in the way.

- Step 6: Roll into balls, press 2-3 extra Smarties on top and bake until lightly golden around the edges. Cool on the tray so the centres stay soft.
Smartie Cookie Tips
- A few Smarties pressed on top may crack as they bake. If you want completely crack-free Smarties, skip adding them before baking and press them in as soon as the cookies come out of the oven while they are still soft.
- If the dough feels too soft to roll into balls, place it in the fridge for 20 minutes to chill.
Storage
Once cooled, store your cookies in an airtight container at room temperature for up to 5 days.
For longer storage, freeze the baked cookies for up to 2 months. Defrost at room temperature. You can also freeze unbaked cookie dough balls and bake them straight from frozen, just add a minute or two to the baking time.
Frequently Asked Questions
See the Smartie cookie tips above.
The most common cause is butter that's too soft. Use chilled butter and pop the dough in the fridge for 20 minutes if it starts to feel warm.
For consistent results, it's best to make the mixture in two separate batches.
⭐️ Did you make these Smartie Cookies in the Thermomix? I'd love to hear what you think - please leave a comment and recipe rating below! You can also subscribe to my email list to never miss a new Thermomix recipe.
📖 Recipe

Thermomix Smartie Cookies
Ingredients
- 120 g unsalted butter, chilled and cubed
- 100 g soft brown sugar
- 45 g white sugar
- 1 large egg, room temperature
- 1 teaspoon vanilla extract
- 215 g plain flour
- ½ teaspoon bicarbonate of soda
- ¼ teaspoon salt
- 140 g Smarties, plus a few extra to press on top of the dough before baking.
Instructions
- Heat your oven to 160°C fan, or 180°C conventional. Line two baking trays with baking paper.
- Place the chilled butter in the Thermomix and blend for 12 sec/speed 5 until smooth and workable. Scrape down the sides of the bowl with a spatula.
- Add the brown and white sugar, then mix for 20 sec/speed 4. Scrape the bowl thoroughly, then mix again for 15 sec/speed 4 until smooth.
- Add the egg and vanilla, then mix for 15 sec/speed 3. Scrape down the bowl, then mix again for 15 sec/speed 3.
- Add the flour, bicarbonate of soda and salt. Mix for 10 sec/speed 4, scrape the bowl well, then mix again for 3 sec/speed 4. Lift the mixture around the blades to make sure no dry flour is hiding underneath.
- Fold the Smarties through by hand using a spatula so they stay whole. Tip: For easier mixing, transfer the dough to a regular mixing bowl where you can stir freely without the blades. I also find it easier to scoop the dough this way.
- Shape the dough into walnut-sized balls and arrange them on the trays, leaving about 5 cm between each one. Press 2-3 extra Smarties on top. If the dough feels soft, place it in the fridge for 20 minutes to chill.
- Bake one tray at a time for 12-14 minutes, until the edges are lightly golden and the centres remain soft. Keep the second tray in the fridge so the dough stays firm.
- Allow the biscuits to cool on the trays for 5 minutes, then carefully lift them with a spatula onto a wire rack. They will firm up as they cool.


Comments
No Comments