PREHEAT oven to 450°F. PLACE asparagus on baking sheet. DRIZZLE with oil, turning spears to coat evenly. BAKE 7 to 10 minutes or until tender when pierced with a fork.

Meanwhile, SPRAY a small skillet with cooking spray. SCRAMBLE egg according to personal preference for doneness.

TOAST bread and WARM prosciutto in microwave oven or skillet.

LAYER toast with asparagus and prosciutto. PLACE egg on top. SPRINKLE with cheese.