
Preheat the oven to 250°F and line a large baking sheet with parchment paper.
Place the cherry tomatoes cut side up on the baking sheet and drizzle with olive oil, sprinkle with salt, pepper, and fresh thyme, if using.
Roast the tomatoes until they’re well shriveled around the edges, 2 to 3 hours. The time will vary depending on the size and water content of your tomatoes.