Cut stale bread in one-quarter inch slices, shape with small biscuit cutter (2 inches in diameter). Spread lightly with French or German mustard, sprinkle thickly with grated cheese, sprinkle cheese with finely chopped olives. Place a small stuffed olive in center of each. Dispose on a small plate covered with a paper doily. Garnish with sprays of parsley and serve as an "appetizer."