Preheat your oven to 400°F (200°C) with the oven rack positioned in the middle.

Wash your Roma tomatoes under running water and halve them lengthwise.

Finely mince your garlic cloves.

In a large mixing bowl, combine the halved Roma tomatoes with minced garlic, olive oil, balsamic vinegar, oregano, and red pepper flakes.

Gently toss the tomatoes with the other ingredients until well-coated.

Line a baking sheet with parchment paper and arrange the seasoned tomatoes cut-side up.

Roast the tomatoes for 45 to 60 minutes until tender and caramelized.

Remove the tomatoes from the oven and allow them to cool slightly.

Slice fresh mozzarella cheese into 1/4-inch thick rounds.

On a serving platter, layer the cooled roasted tomatoes, mozzarella slices, and fresh basil leaves.

Drizzle with extra virgin olive oil and optionally balsamic glaze, and season with salt and pepper.

Serve immediately for the best flavor.