Preheat the oven to 250 degrees. Place the tomatoes cut-side up in a shallow baking dish. Sprinkle with kosher salt and let sit 20 minutes.
Roast at least 5 hours, until slightly dry but still juicy.
Drizzle with olive oil and sprinkle with thyme leaves and more salt, if needed.
Increase the oven temperature to 400 degrees. Place the baguette slices on a baking sheet, drizzle with olive oil and bake until golden brown, about 8-10 minutes. Rub the crostini with garlic and top each with a roasted tomato.
Recipe by The Amiable Cooks at https://theamiablecooks.com/crostini-with-thyme-roasted-tomatoes/