01 - Place bread slices in a toaster or under a broiler and toast until golden brown and crisp.
02 - Halve the avocado, remove the pit, and scoop the flesh into a small mixing bowl. Add lemon juice, salt, and freshly ground black pepper, then mash with a fork or potato masher until slightly chunky.
03 - Distribute the mashed avocado evenly over each warm toast slice.
04 - Drape the thinly sliced smoked salmon over the avocado layer on both pieces of toast.
05 - Sprinkle chopped dill or chives, as well as red pepper flakes and capers if using, over the top.
06 - Plate and serve with lemon wedges on the side for squeezing over just before eating.