How to Make It
Preheat the oven to 325°. Line a rimmed baking sheet with foil. Combine all of the ingredients on the foil and toss to coat the tomato wedges. Bake for about 3 hours, stirring occasionally, until the tomatoes are deeply caramelized. Discard the thyme and garlic and let cool.
Arrange the bread on a baking sheet and drizzle with olive oil. Toast until golden, about 8 minutes. Spread some of the tomato jam on half of the toasts and top with the soppressata, cheese and frisée. Close the sandwiches and serve.