Brush the bread slices with olive oil on both sides. Then, grill them in a skillet, grill pan, or cast iron pan for a couple of minutes on each side over medium-high heat until nicely toasted.
Mix the crème fraîche with lemon juice, lemon zest, chopped dill, chopped spring onions, and chopped capers, as well as a pinch of salt and pepper.
Get the assembly board ready: skillet-toasted bread, smoked salmon, lemon-herb crème fraîche and avocados.
Add the mashed avocado to the toasted bread slices. Then, add the smoked salmon and, top it all off with the lemon-capers-herb crème fraîche.