Liten paj utan skorpa

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1. 1
   Preheat oven to 350°F. Spray a nonstick muffin pan with olive oil spray.
2. 2
   Heat the oil in a large non-stick skillet over medium heat.
3. 3
   Sauté onions and salt for 5 minutes, until soft, add bell peppers, garlic, tomato, kielbasa sauté for another 5 to 7 minutes. Add spinach and cook until wilted, about 1 minute.  Set aside.
4. 4
   Meanwhile, in a large bowl, whisk the eggs, egg whites, milk, flour, salt and pepper until smooth.
5. 5
   Add the cheese and cooked kielbasa mixture to the bowl and mix well.
6. 6
   Pour into the prepared muffin pan and bake for 28 to 30 minutes, or until firm.