Heat oil in nonstick skillet over medium heat and add onions and garlic; cook until tender and stir in the spinach.
Reduce heat to medium low for 3-5 minutes.
In large bowl, beat the eggs, Egg Beaters and sour cream until frothy.
Pour over spinach and mix well; cook until egg mixture is cooked on bottom and almost set on top. Sprinkle with cheese.
Place in oven to broil on low until cheese melts.
Remove from oven, cut into wedges and serve with salsa on the side.