Gardening is a passion of mine and I always grow a variety of tomatoes. Although there are many ways to preserve your garden tomatoes, today I’m writing about preserving your tomatoes by roasting them. There is nothing like the delicious simplicity of tossing fresh, oven-roasted tomatoes over gluten-free pasta.
The good news is that if you find yourself with an influx of tomatoes, you can roast them at their peak ripeness and keep them in an airtight container in your fridge for up to three weeks. Read on to find out how you can preserve your garden tomatoes by roasting them so you can enjoy them again and again.
HOW TO PRESERVE YOUR GARDEN TOMATOES
- Remove the green leafy tops from the tomatoes you’ve picked.
- Put tomatoes into a strainer and rinse well under water.
- Let the water drain off the tomatoes. Then dry with a clean kitchen towel.
- Cut the smaller tomatoes, like grape or cherry tomatoes, in half or thirds depending on their size. Dice any larger tomatoes into similar size pieces.
- Remove the core from the cut tomatoes.
- Put the tomatoes in a large bowl and toss with oil, salt, and pepper to taste. You want some flavour, but don’t over do it as you want to keep the integrity of the tomato flavour. You can add more flavour afterwards when using them.
- Cover a baking sheet in foil and a layer of parchment paper over top the foil. This help keeps the pan clean and your tomatoes from sticking.
- Bake in a 375° oven for 30 minutes turning them halfway through. You want the tomatoes to be soft and slightly shriveled.
- Let the tomatoes cool on the cookie sheet.
- When cool place in an air tight container or jar and top with a layer of oil. The layer of oil is what persevere them and keeps mould from growing. I used Pureoliva Blended Oil, which is a blend of canola and Olive oil. You can use either canola or olive oil depending on how strong an olive oil flavour that you enjoy.
- Label and place in your fridge to store.
You can add these roasted tomatoes to a charcuterie board, or mix them with roasted cauliflower. This is a very easy way to preserve tomatoes that doesn’t limit how you can use them.
We’ve also shared a great way of preserving herbs from your garden in oil and keeping them in your fridge afterwards.
Do you have different recipes or gardening tip for preserving tomatoes? What is your favourite way to preserve the bounty of your garden?

Tomatoes Oil Salt, pepper, granulated garlic, and granulated onion (optional)
Ingredients
INSTRUCTIONS/NOTES/TIPS