Preheat a broiler, oven or grill to medium-high heat .
Toast the bread until lightly golden brown on both sides-the bread should be crisp but still tender on the inside, not brittle. Dollop some ricotta on each slice of toast. Drizzle a little honey over all, and then zest the orange over the tops. Scatter the hazelnuts on top, put a wedge of fruit on each toast and finish with another drizzle of honey.