How to Make It
Preheat grill to medium-high heat.
Combine 1 teaspoon water and 1 teaspoon honey in a small bowl. Rub mixture over cut sides of nectarines.
Arrange nectarines on grill grates coated with cooking spray; grill, uncovered, 2 minutes on each side. Remove from grill; cut each piece into 4 wedges.
Coat bread with cooking spray. Arrange on grill grates; grill 1 minute on 1 side or until lightly browned. Remove from grill. Reduce grill heat to medium.
Divide nectarines evenly over toasted sides of bread. Top evenly with cheese. Arrange on grill grates; grill, covered, 1 1/2 minutes or until cheese softens and bread is toasted on bottom. Arrange toasts on a platter; drizzle with remaining 5 teaspoons honey. Drizzle with balsamic glaze. Garnish with microgreens or sprouts, if desired. Serve immediately.