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how to dehydrate tomatoes in a food dehydrator




Tomatoes are delicious fruits that can be enjoyed in many different ways. From fresh salads to homemade pasta sauces, tomatoes add a burst of flavor to any dish. However, if you find yourself with an abundance of tomatoes and want to extend their shelf life, dehydrating them in a food dehydrator is the perfect solution. Dehydrated tomatoes can be stored for months and used in a variety of recipes such as soups, stews, pizzas, and even as a healthy snack. In this article, we will guide you through the process of dehydrating tomatoes in a food dehydrator, ensuring you achieve the perfect results every time.

Choosing the Right Tomatoes

Selecting the Best Tomato Varieties

When it comes to dehydrating tomatoes, not all varieties are created equal. Some tomatoes contain more water content than others, making them less suitable for dehydration. In order to achieve the best results, it is important to choose tomatoes with a lower moisture content. Roma tomatoes are an excellent choice due to their firm texture and lower water content. However, other varieties like San Marzano, Amish Paste, or Plum tomatoes also work well for dehydration.

Preparing the Tomatoes

Once you have selected the perfect tomatoes for dehydration, it is time to prepare them for the drying process. Start by washing the tomatoes thoroughly under running water to remove any dirt or debris. Pat them dry with a clean kitchen towel. If desired, you can remove the stems and core, but it is not necessary. Next, slice the tomatoes into even, ¼-inch thick slices. Ensure they are all uniform in thickness to ensure even drying.

Drying the Tomatoes

Layering and Pre-Treating

Now that your tomatoes are sliced and ready, it's time to set up your food dehydrator. Start by placing the tomato slices on the dehydrator trays in a single layer, making sure they do not overlap. This will ensure uniform drying and prevent any tomatoes from sticking together. If you prefer, you can lightly sprinkle salt or herbs like oregano, basil, or thyme on the tomato slices at this stage. Pre-treating the tomatoes with salt or herbs adds an extra layer of flavor.

Setting the Temperature and Time

Different food dehydrators may vary in temperature and drying time. However, as a general guideline, set your food dehydrator to a temperature between 125°F to 135°F (52°C to 57°C). This low heat is crucial to preserve the nutrients and enzymes in the tomatoes while removing the moisture. The drying time can range from 6 to 12 hours, depending on the thickness of the slices, the moisture content, and your desired consistency. It is important to check on the tomatoes occasionally to ensure they are drying evenly and not becoming overly dried or scorched.

Testing for Dryness and Storing

Once the drying time is complete, it's time to check if the tomatoes are fully dehydrated. They should feel dry to the touch with no signs of moisture. If the tomatoes are still slightly moist, return them to the dehydrator for an additional hour or two. Once fully dehydrated, remove the trays from the dehydrator and allow the tomatoes to cool completely before storing. You can store the dehydrated tomatoes in glass jars or airtight containers. Ensure they are stored in a cool, dry place away from direct sunlight. Properly dehydrated tomatoes can last up to a year or even longer if stored correctly.


Dehydrating tomatoes in a food dehydrator is a simple and effective way to extend their shelf life, intensify their flavor, and enable you to enjoy the taste of summer all year round. By choosing the right tomatoes, preparing them properly, and following the correct dehydration process, you can easily achieve perfectly dehydrated tomatoes. Whether you use them in your favorite recipes or enjoy them as a snack, dehydrated tomatoes are a versatile and delicious addition to your pantry. So, the next time you find yourself with a surplus of tomatoes, don't let them go to waste—dry them in a food dehydrator and savor their exquisite flavors anytime you desire.


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