One way to make this sandwich quicker is to cook the salmon on a pan or skillet. Season it and place it on a hot pan, flip it after about 2 or 3 minutes. This way gives the salmon a slight char. You can alternatively grill the fish, which also cooks it well and works perfectly in this sandwich. It all depends on what kind of texture you’re craving, any way you cook the salmon, it pairs well with avocados.