01 - Toast the bread slices in a toaster or skillet until golden brown and crisp on both sides.
02 - Halve and pit the avocado. Scoop the flesh into a small bowl and mash with a fork until creamy. Season with sea salt, cracked black pepper, and a squeeze of fresh lemon or lime juice if desired.
03 - Spread the mashed avocado evenly and generously over each slice of toasted bread.
04 - Spoon the drained, chopped kimchi over the avocado layer, distributing it evenly across both slices.
05 - Drizzle with olive oil and sprinkle with toasted sesame seeds, fresh cilantro, and red pepper flakes if using.
06 - Serve immediately while the toast is still warm and crisp.