Warm egg white/spinach quiche

The other night I was craving something healthy, something fast and simple, and something comforting.  Nothing better than a nice quiche from the oven.  This recipe is simple and yes, very tasty

Recipe:

1/2 of red onion chopped w/ 2 gloves of garlic chopped fine (heat up in skillet)
Add 8 oz spinach around 2 1/2 cups (I used fresh spinach and cooked it w/ the onion and garlic

Add 6 egg whites
You can either put 1/4 c. feta cheese or 1/2 c. ricotta to the mixture
Add salt and pepper to taste

Mix together and bake at 350 for 30 min.