Combine boiling water and tomatoes in a bowl; let stand 30 minutes or until soft. Drain and chop.
Preheat oven to 350°.
Heat olive oil in a large nonstick skillet over medium-high heat. Add onion, oregano, basil, and garlic; sauté 4 minutes or until onion begins to brown. Stir in tomatoes and spinach; cook 1 minute. Remove from heat; cool 10 minutes. Stir in cheeses, salt, pepper, and egg white; mix well.
Place 1 phyllo sheet on a large cutting board or work surface (cover remaining dough to prevent drying), and lightly coat with cooking spray. Sprinkle with 1 1/2 teaspoons breadcrumbs. Repeat layers 3 times; top with 1 phyllo sheet. Gently press phyllo layers together. Lightly coat top phyllo sheet with cooking spray. Spoon half of the spinach mixture along 1 long edge of phyllo, leaving a 2-inch border. Fold over short edges of phyllo to cover 2 inches of spinach mixture on each end. Starting at long edge, roll up jelly-roll fashion. Place roll, seam side down, on a baking sheet coated with cooking spray. Cut diagonal slits into top of roll using a sharp knife. Lightly coat with cooking spray. Repeat procedure with the remaining phyllo, cooking spray, breadcrumbs, and spinach mixture. Bake at 350° for 22 minutes or until golden. Let stand 5 minutes. Cut each roll into 5 equal slices.