Bias-slice carrots crosswise about 1/2 inch thick.
Cook as directed above; drain.
Meanwhile, in small saucepan combine sugar, cornstarch, ginger, and 1/4 teaspoon salt.
Add orange juice; cook, stirring constantly, till thickened and bubbly.
Boil 1 minute; remove from heat.
Stir in butter.
Pour over hot carrots, tossing to coat evenly.
Garnish with parsley and orange twist, if desired.