Wash and dry the tomatoes
Add in a bowl or plastic bag the tomatoes, a pinch or two of salt, the thyme, and the olive oil
Let them sit in the fridge 30 minutes to an hour moving them around occasionally to coat
Preheat the oven to 400 F
Pour onto a baking sheet lined with a Silpat mat
Rip or jaggedly cut the Mozzarella cheese and place it in the serving dish
Roast for 15- 20 minutes until tomatoes start to wrinkle
Pour the entire contents of the baking sheet oil and all over the Mozzarella
Garnish with the fresh basil
Add the balsamic vinegar if desired
Salt to taste