Perfect Fluffy Mashed Potato Thermomix Recipe

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My perfectly fluffy mashed potato is deliciously buttery and with just the right amount of salt.  It’s the ideal Thermomix Comfort food. 

square pic Thermomix mashed potato in a white bowl, white background

Whether it’s a cold winters day or I’m feeling a little tired and run down, mashed potatoes have a special place in my heart and in my tummy. I love the creamy goodness. It’s basic but it’s homely and warming.

This is a very basic recipe but like all simple dishes, the correct ingredients and technique are the keys to perfection.  I know a lot of people have trouble making perfect mashed potato in the Thermomix so I wanted to share my tips.  Thermomix mashed potatoes are a life changer!

This recipe gives you bang for your Thermomix buck because it’s family-friendly and SO MUCH easier to make in the Thermomix. In the Thermomix mashed potatoes requires almost no input from the cook. It’s literally a set and forget dish that everyone loves. 

Let’s take a look at how you would make mashed potatoes if you didn’t have a Thermomix.

Perfect Mashed Potato Stove Top Method

The problem with the stovetop method is that for a side dish, mashed potatoes are rather demanding. 

  1. Firstly you have to peel a kilo of potatoes
  2. Then cut them into 2-3cm cubes
  3. Add the potatoes to a large saucepan of salted water
  4. Bring the water and potatoes to the boil.
  5. Cook for 15- 20min
  6. Adjust the heat setting each time the water boils over or comes off the boil.
  7. Test the larger cubes of potato with a knife to see if they’re cooked through
  8. Drain the potatoes through a sieve
  9. Add 50g cubed butter and 200g milk and mash by hand.  (Don’t over mash) ie: stick blender or food processor won’t work *see tips below

Close up mashed potato in a white bowl, white background

Thermomix Mashed Potato

Making mashed potato in the Thermomix is a no-brainer because it requires very little effort compared with the stove-top method. This recipe should be used as one of your “go to” basic Thermomix recipes.

I’ve noticed that when making mashed potatoes people usually have one of two problems, the wrong potatoes, or over mashing so here are my tips.

Perfect Thermomix Mashed Potato

Choose The Correct Potato for Mashing

It is important to choose the correct type of potato for mashing.  The potato needs to be a “floury’ variety, not a waxy potato. If you choose a waxy potato the result is likely to be something that resembles and tastes more like a lumpy glue than a light fluffy mashed potato. 

In Australia we have a number of readily grown floury potatoes, choose one of these varieties;

  • King Edward
  • Golden Delight
  • Sebago
  • Dutch Cream

Beware of any potatoes that are suitable for salads. For a potato to be suitable for salads they need to have the ability to hold their shape when cooked. This is NOT what we want for a mashed potato! I tend to steer clear of “all-rounder” potatoes for the same reason. 

The correct cooking Method for Mashing

My next tip is not to add the Butterfly to the TM Bowl until after the potatoes are cooked. There are two reasons for this; 

  1. The butterfly has a tendency to jump off whilst the potatoes are being cooked. This can damage the butterfly if it remains out of position for the duration of the cook.  Plus it’s annoying to be trying to replace it throughout the cooking time.
  2. More importantly, when potatoes are mashed, starch is released. The longer the mashing process the more starch which is released. Gluey mashed potato occurs when too much starch gets released. SO we want to do the minimise the mashing.  To do this we add the butterfly once the potatoes are fully cooked.  

If you’re looking for the perfect accompaniment for mash potatoes take a look at my Maple Syrup Lamb Shanks! This is a personal favourite recipe of mine.

Thermomix Maple Syrup Lamb Shank

Thermomix Maple Syrup Lamb Shank


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Portrail image fluffy mashed potato on a blue tea towel, white background

Perfect Mashed Potatoes Thermomix

Julie Carlyle
My mashed potato recipe is perfectly fluffy, deliciously buttery and with just the right amount of salty goodness. An ideal Thermomix Comfort food.
5 from 2 votes
Prep Time 5 mins
Cook Time 30 mins
Course Basic, Side Dish
Cuisine American, Australian, English
Servings 6 servings
Calories 176 kcal



  • 1000 g potato choose floury potato, no need to peel potatoes if they're washed.
  • 5 g salt
  • 350 g milk
  • 50 g salted butter cubed and at room temp


  • Cut potatoes into 2-3cm cubes and add to TM Bowl.
  • Add salt and milk to TM Bowl. Cook 30 min/95 Degrees/Speed 1 (reverse blade) (MC OUT)
  • Add the internal steam basket to the lid to reduce splatters.
  • Add the butterfly to the TM bowl inserting it between the blades and giving it a half-turn to the right.
  • Add butter to the TM Bowl. Whip 30 Sec/Speed 3.


Please read the tips above regarding selecting the best potato for this recipe. I cannot stress enough that success in making the perfect mashed potato depends on choosing a flour potato.
Also, ensure that the potato is well cooked before proceeding to the mashing stage. The potato should be falling apart and unable to hold its shape when a knife is inserted. 


Calories: 176kcalCarbohydrates: 24gProtein: 6gFat: 7gSaturated Fat: 4gCholesterol: 19mgSodium: 424mgPotassium: 779mgFiber: 4gSugar: 3gVitamin A: 327IUVitamin C: 19mgCalcium: 123mgIron: 5mg
Keyword Basic Recipe, Cleaning Thermomix, Comfort food, Mashed Potato, Side dish
Tried this recipe?Let us know how it was!

Please feel free to leave me a comment. I love hearing from everyone 🙂Rating the recipe once you’ve made the dish helps other readers decide whether to make my dishes.  Also if you take any pics, please post them to social media and tag me!!

Happy Cooking



4 thoughts on “Perfect Fluffy Mashed Potato Thermomix Recipe”

  1. Carina Nae says:

    5 stars
    As the name says, its perfect mash potato. So simple and easy, especially given all the fails on cookidoo

  2. Joy Hollis says:

    5 stars
    This is my go to recipe for mash potato, always a win and never a running or gooey mess

  3. Geneviève says:

    Can you double the recipe?
    Apologies i have a big family
    Thank you for the tips I just steam them in the Varoma and then put them in the bowl with the whip for 15 sec speed 4 🙂

    1. Julie Carlyle says:

      I have only ever increased the potato to 1.5kgs and added an extra 5 mins cooking time.
      I hope this helps, increase the milk by half also.
      Happy cooking

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