Grilled Broccoli Flatbread Pizzas

Heat a grill or grill pan to medium; clean and lightly oil hot grill. Brush broccoli halves with oil and season with salt and pepper. Grill, covered, until lightly charred and tender, 4 to 5 minutes per side. Transfer to a cutting board, cut into florets, and discard stalks.

Working in batches if necessary, grill naan until undersides begin to char, 1 to 2 minutes. Flip and immediately top with mozzarella, broccoli, Parmesan, and red-pepper flakes if using. Season with salt and pepper, cover, and cook until cheese melts, 3 to 5 minutes. Top with basil and serve.