01 -
Preheat the grill to medium-high. Clean and oil the grate well. With a sharp knife, core the tomatoes and slice each in half. If using Roma tomatoes, cut through the core; for round varieties, slice perpendicular to the core.
02 -
Place tomatoes in a mixing bowl. In a separate bowl, mix olive oil, balsamic vinegar, minced garlic, chopped oregano, salt, and pepper. Pour marinade over tomatoes and gently toss to coat evenly.
03 -
Place tomatoes cut side down on the greased grill, reserving any remaining marinade. Cover and grill for 5–7 minutes (longer for larger tomatoes) until deep char marks form. Using a thin metal spatula, turn tomatoes and continue grilling, covered, until just softened but still intact.
04 -
Transfer grilled tomatoes to a serving platter. Spoon reserved marinade over the top, distributing oregano evenly. Drizzle with additional olive oil and sprinkle with finishing salt as desired. Serve warm or at room temperature.