Step 1

In a medium skillet sauté asparagus until tender, about 7 minutes. Set aside.

Step 2

In a small bowl combine egg whites and tzatziki; stir to combine.

Step 3

Spray non stick skillet with cooking spray and bring to medium heat. Pour in egg white and allow it to spread over the skillet surface. Cook until egg turns white; about 2 minutes.

Step 4

Slide omelette onto a plate and place asparagus, tomatoes, green onions and feta in the middle. Fold the omelette into thirds to cover the fillings.

Step 5

Serve hot with additional tzatziki. Salt and pepper to taste.