1. Preheat oven to 375°.
2. Unroll dough, and press into bottom and up sides of a 9-inch round removable-bottom tart pan coated with cooking spray.
3. Heat a medium nonstick skillet over medium heat. Coat pan with cooking spray. Add thinly sliced green onions to pan; cook 5 minutes, stirring occasionally. Combine cooked green onions, ricotta cheese, sliced fresh chives, minced fresh dill, salt, freshly ground black pepper, eggs, and egg white. Pour onion mixture into prepared crust; sprinkle mixture with Parmigiano-Reggiano. Bake at 375° for 35 minutes or until center is set. Let stand 5 minutes. Cut into 6 wedges.