Mexican lentil casserole

1. In a medium saucepan, combine onions, green pepper, celery and water.
2. Bring to a boil over medium heat.
3. Stiri in lentils, cover pot, reduce heat to low and simmer 40 minutes.
4. Preheat oven to 375 degrees.
5. Lightly spray a 1 ¾-quart casserole with vegetable cooking spray.
6. Remove saucepan from heat and stir in remaining ingredients, mixing well.
7. Spoon into prepared casserole.
8. Bakei uncovered, 25 minutes.
9. Let stand 5 minutes before serving.
10. Nutrition (per serving): 226 calories saturated fat 0 g total fat 1 g (5% of calories) protein 12 g (22% of calories) carbohydrates 41 g (73% of calories).