1. Microwave the spinach for 2 1/2 minutes on high. Drain the excess liquid.
2. Line a 12-cup muffin pan with foil baking cups. Spray the cups with cooking spray.
3. Combine the egg substitute, cheese, peppers, onions, and spinach in a bowl. Mix well. Divide evenly among the muffin cups. Bake at 350 degrees F for 20 minutes, or until a knife inserted in the center comes out clean.
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Vegetable Quiche mini-cups recipe