01 - Preheat a grill or grill pan to medium-high heat, approximately 400°F.
02 - In a small bowl, whisk together the olive oil, minced garlic, dried oregano, sea salt, and black pepper until well combined.
03 - Using a basting brush, generously coat both sides of each eggplant and tomato round with the marinade mixture.
04 - Place the eggplant slices on the hot grill and cook for 4 to 5 minutes per side until tender with distinct grill marks.
05 - Grill the tomato slices for approximately 2 minutes per side until just softened but still holding their shape.
06 - Transfer the grilled eggplant and tomato slices to a serving platter, alternating layers. Drizzle with balsamic glaze and sprinkle with fresh basil chiffonade before serving.