Thermomix Smartie Cookies

ByVicki Newton Published on Updated on
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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.

Smartie Cookies on a white marble benchtop, with a blue striped tea towel on the left.

This is my trusted cookie dough base, and if you love it, you’ll also love my Thermomix white chocolate macadamia nut cookies – same method, just loaded with white choc chips and macadamias instead.

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

A collection of ingredients used to make Smartie Cookies.

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.

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.

Softened butter in a Thermomix bowl.
  1. Soften the butter briefly in the Thermomix until spreadable.
Creamed butter and sugar in a Thermomix bowl.
  1. Beat in the sugars until creamy, scraping the bowl well so everything blends evenly.
Cookie batter in a Thermomix bowl.
  1. Mix in the egg and vanilla until smooth. The egg may curdle, but will come together later on.
Smartie cookie dough in a thermomix bowl.
  1. 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.
Smartie Cookie Dough in a cream bowl.
  1. 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.
Smartie cookie dough balls on a baking sheet lined with baking paper.
  1. 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.

Recipe Tips

Crack-free Smarties: 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.

Soft dough: If the dough feels too soft to roll into balls, place it in the fridge for 20 minutes to chill.

Frequently Asked Questions

See the recipe tips above.

For consistent results, it’s best to make the cookie dough mixture in two separate batches.

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.

Thermomix Smartie Cookies

Fun, colourful and chewy, these Smartie Cookies mix together easily in the Thermomix and bake up beautifully every time.
Smartie Cookies on a white background.
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Servings: 20
Prep Time: 15 minutes
Cook Time: 12 minutes
Total Time: 27 minutes

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

  1. Heat your oven to 180°C/350°F (160°C fan). Line two baking trays with baking paper.
  2. 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.
  3. 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.
  4. Add the egg and vanilla, then mix for 15 sec/speed 3. Scrape down the bowl, then mix again for 15 sec/speed 3.
  5. 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.
  6. Fold the Smarties through by hand using a spatula so they stay whole. Tip: Transfer the dough to a regular mixing bowl for easier scooping and shaping, with the blades safely out of the way.
  7. Shape the dough into walnut-sized balls and arrange them on the trays, leaving about 5cm between each one. Press 2-3 extra Smarties on top. If the dough feels too soft to handle, place it in the fridge for 20 minutes to chill.
  8. 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 while the first one bakes.
  9. Allow the cookies 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.

Notes

Tip: 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.
Storage & freezing: Store in an airtight container for up to 5 days. Freeze baked cookies for up to 2 months and thaw at room temperature. Unbaked dough balls can also be frozen and baked from frozen, adding 1-2 minutes to the bake time.
Course: Cookies
Cuisine: Western
Author: Vicki Newton

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