01 - Toast the bread slices in a toaster or on a grill pan until golden and crisped to your liking.
02 - Halve the avocado, remove the pit, and scoop the flesh into a small bowl. Add lime juice, salt, and pepper, then mash with a fork until nearly smooth.
03 - Spread the mashed avocado evenly over each toasted bread slice.
04 - Divide the chopped kimchi between both toasts, scattering it evenly over the avocado layer.
05 - Sprinkle with toasted sesame seeds and chopped green onions. Add red pepper flakes or a light drizzle of sesame oil if desired. Serve immediately.