In a small bowl, combine the first 11 ingredients. Place 2/3 cup lentils in each of four 12-ounce jelly jars or cellophane gift bags. Evenly divide onion mixture among jars and top with another scant 2/3 cup lentils. Store in a cool dry place for up to 6 months. Yield: 4 batches.
To prepare one batch of soup: In a large saucepan, saute carrot and celery in oil until tender. Add soup mix and broth. Bring to a boil. Reduce heat; cover and simmer for 25-30 minutes or until lentils are tender. Yield: 4 cups per batch.