Mix cream cheese, Greek yogurt, Dijon mustard, and dill until smooth and creamy, ensuring there are no lumps for easy spreading.
Lightly drizzle smoked salmon with olive oil, lemon juice, and zest to enhance its flavor without overpowering it.
Toast bread slices until golden and crisp, providing a stable base for toppings.
Spread the creamy mixture evenly on each slice, then layer greens and smoked salmon on top.
Add red onion slices, capers, and black pepper for flavor contrast and visual appeal.
Serve immediately for the best texture and freshness.