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