Preheat the oven to 350°F and line a baking sheet with the phyllo cups.
In a mixing bowl, combine the chopped olives, capers, minced garlic, olive oil, and oregano. Stir until the mixture is evenly coated.
Spoon the olive tapenade into each phyllo cup, filling them generously but not overflowing.
Sprinkle the crumbled feta cheese over the filled cups, then top with the chopped parsley.
Bake for 6 to 8 minutes until the cups are warmed through and the feta softens slightly. Serve right away.