Preheat the oven to 400°F (200°C) and lightly grease a baking dish.
In a small saucepan, combine balsamic vinegar, honey, and minced garlic. Simmer over low heat until slightly thickened.
Pat the scallops dry and arrange them in the prepared baking dish. Drizzle with olive oil, salt, and black pepper.
Brush the scallops with half of the balsamic glaze.
Bake for 10-12 minutes, basting with more glaze halfway through cooking.
Broil for 1-2 minutes at the end to caramelize the glaze slightly.
Garnish with fresh thyme and serve immediately.