3 Ways to Thicken Mashed Potatoes

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3 Ways to Thicken Mashed Potatoes
3 Ways to Thicken Mashed Potatoes

Mashed potato is a classic dish that is good both as an accompaniment and on its own. The problem is that, sometimes, the puree comes out too thin or doesn't have that thick and beautiful texture. This happens when we overcook the potatoes, add too much milk, or don't drain the water properly. The good news is that there are some ways to fix the puree using the stove, flour, thickening ingredients or more potatoes.


Method 1 of 3: Using Heat

Thicken Mashed Potatoes Step 1

Step 1. Heat the puree on the stove and stir only sometimes

Place the puree in a large pot without a lid and turn on medium heat. Stir sometimes with a fork until excess water evaporates and the recipe has the consistency you want.

Stirring prevents the puree from sticking to the bottom of the pan, but don't stir all the time or it will go past the point and go gooey

Thicken Mashed Potatoes Step 2

Step 2. Microwave the puree for a minute or two

Place the puree in a microwave-safe bowl, uncapped. Stop every minute, take the bowl out of the microwave and see how it feels. Keep doing this until the puree thickens.

Turn on the microwave at high power

Step 3. Bake the puree at 160 °C for 10 to 15 minutes

Preheat the oven to 160 °C and place the watery puree in a glass refractory. Once the oven is preheated, bake for 10 to 15 minutes to remove excess moisture.

Leave the refractory uncovered while roasting the puree

Method 2 of 3: Using Ingredients

Thicken Mashed Potatoes Step 4

Step 1. Choose the ingredient you prefer

There are several ingredients that can be added to the puree to thicken it quickly, such as flour, cornstarch, powdered milk, powdered preparation for mashed potatoes, arrowroot, tapioca or parmesan cheese.

  • Cornstarch is gluten free and has twice the power to thicken than wheat flour. Because of this, you should use a small amount.
  • Powdered preparation for mashed potatoes is also a good option, but it does contain gluten.

Step 2. Put a tablespoon of the chosen ingredient into the puree

Mix with a fork until well combined. You may notice a big difference in consistency right away, this is normal!

Step 3. Continue adding the chosen ingredient, one tablespoon at a time

Stir well after each spoonful. Do this until you get the consistency you want.

Method 3 of 3: Adding More Potatoes

Thicken Mashed Potatoes Step 7

Step 1. Grate one or two raw potatoes and place in a medium skillet

Use a cheese grater to do this. They should look like you're going to make a Swiss potato. It takes a while, but it's important to grate it very finely so that the pieces don't get too big when mixing into the puree.

The cheese grater may have multiple sides. Use the medium (neither the largest nor the smallest) to grate the potatoes, as if you were making a Swiss potato

Step 2. Add enough water to cover the grated potatoes and bring to a boil

The amount of water needed will depend on the size of the pan, but the rule is to cover the potato. Then bring to a boil over medium heat.

Do not cover the pan

Thicken Mashed Potatoes Step 9

Step 3. Drain the water as soon as the grated potato is cooked

As soon as the water starts to boil, take a fork and skewer the grated potato to see if it's already soft. If so, quickly drain the water using a pasta drainer.

If they are not yet soft and cooked, leave them on the fire and test again after a minute. Keep doing this every minute until they get to the point. Potatoes tend to cook fast, so it's important to keep an eye out

Step 4. Mash the grated boiled potato with a fork

Return the potato to the skillet and use a large fork to knead until it reaches the desired consistency. Be careful not to wrinkle too much or your plan to thicken the puree will not work.

Step 5. Mix the freshly mashed potatoes with the puree

Take a spoon to stir the two until smooth. This should thicken the puree well.

If the consistency is not good, repeat the process and add more potatoes


  • Mix starchy potatoes like Asterix with lighter potatoes like Yacon into the puree for a fluffy consistency.
  • Don't throw the mashed potatoes away just because you couldn't bring them to the consistency you want! It can be placed in soups, stews and roasts. Run away from food waste.

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