1. In a shallow dish, combine eggs, evaporated milk, orange juice, orange rind and sugar.
2. Dip both sides of croissants in egg mixture, coating thoroughly.
3 Place slices in a single layer on baking sheet covered with foil. Freeze, uncovered, 30 minutes or until croissants are firm. Remove from baking sheet and place in freezer bags. Tightly seal and label bags.
4. They can be stored for 3 - 4 weeks in freezer.
To serve: Preheat oven to 450 degrees. Remove croissants from freezer, and place in a single layer on greased, foil lined baking sheet.