1. Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius).
2. Heat oil in a large frying pan and add the onion. Sauté until golden.
3. Add the kielbasa and sauté for a few minutes. Add the croutons and stir, cooking for a few more minutes. Remove from heat.
4. Add water to soften the croutons. Add dates and mix well.