Instructions

1. Heat oven to 250F degrees.
2. Line a large rimmed baking dish with foil.
3. Slice tomatoes in half and place them cut side up on the baking dish.
4. Drizzle with enough oil just to coat all the tomatoes. (about 2 tablespoons)
5. Sprinkle with salt and pepper if desired. Use a light hand as they flavors concentrate immensely as the tomatoes cook.
6. Roast tomatoes in the oven for just about three hours. You want the tomatoes to be shriveled and dry, but with a little juice left inside. Keep an eye on them. Every oven is different. It could take two hours or the full three.
7. Use them right away or let them cool and store them in an airtight container in the fridge for up to 3 days.