- Preheat broiler. Spray medium skillet with ovenproof handle with cooking spray; heat over medium heat. Add onions and garlic; cook 3 minutes, or until onions are tender, stirring frequently. Stir in spinach and tomatoes.
- Pour Egg Beaters evenly over spinach mixture; reduce heat to low. Cover skillet with lid. Cook 10 minutes, or until top of the frittata is almost set.
- Remove lid; place skillet under broiler. Broil 2 minutes, or just until top is set. Cut into 3 wedges to serve.
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