How to Dry Tomatoes in the Oven


Oven-dried tomatoes provide the same strong flavor and texture as sun-dried tomatoes, but they dry much more quickly in the controlled heat of your oven. Dried tomatoes boost the flavor of sauces, soups and vinaigrettes. The concentrated flavor in a dried tomato means that a little goes a long way, so you may not need to use as many tomatoes to get the same flavor quality as you would with fresh.

How to Dry Tomatoes in the Oven
(Sarah Vantassel/Demand Media)

Things You'll Need

  • Aluminum foil or cookie sheet
  • Oven thermometer
  • Knife
  • Oven racks
  • Spatula
  • Storage bag or jar
Step 1

Line the bottom oven rack with aluminum foil to catch any drips. Alternatively, place a large cookie sheet on the bottom rack to catch drips.

Sarah Vantassel/Demand Media
Step 2

Preheat the oven to 140 degrees Fahrenheit, propping the oven door slightly ajar so air can circulate. Place an oven thermometer inside the oven and adjust the temperature as needed so it remains at 140 F even with the door open.

Sarah Vantassel/Demand Media
Step 3

Wash the tomatoes and slice out the core. Cut smaller tomatoes in half and cut large tomatoes into quarters. Scoop the pulp and seeds from each half and discard it.

Sarah Vantassel/Demand Media
Step 4

Arrange the tomatoes in a single layer, skin-side down, on an oven-safe cooking rack. Leave 1 to 2 inches of space between the tomatoes so air can circulate freely. Sprinkle the tomatoes with salt to taste.

Sarah Vantassel/Demand Media
Step 5

Place the tomatoes in the oven. Rotate the tray every one to two hours so the tomatoes dry evenly. Press on the top of the tomatoes with a spatula if they begin to curl, usually about halfway through the drying time. Depending on humidity in the kitchen and the juiciness of the tomatoes, it can take as little as six hours or as long as 18 hours for the tomatoes to dry completely.

Sarah Vantassel/Demand Media
Step 6

Remove the tomatoes from the oven when the edges feel dry and sharp and when the rest of the tomato feels dry but leathery. Cool to room temperature and then package the tomatoes in an airtight jar or storage bag.

Sarah Vantassel/Demand Media
Step 7

Store oven-dried tomatoes in the refrigerator or freezer for up to one year. Cold storage prevents discoloration and flavor changes, helping to extend the shelf life of the dried tomatoes.

Sarah Vantassel/Demand Media

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