Mix eggs and milk in small bowl, set aside.
Attach griddle plate to the Grill & Broil and preheat on LOW broil to 350°F.
Brush griddle with cooking oil. Add garlic and cook 1 minute.
Add egg mixture and broil 1 minute.
Spread pesto, tomatoes and half feta cheese down the center of egg mixture.
Broil 2-3 minutes or until eggs are set.
Using a plastic spatula, carefully fold both long edges of eggs towards center of pan to cover filling. Sprinkle remaining cheese over omelet and broil an additional 1 minute.
Cut omelet in half and remove from griddle.
Tip: Freeze leftover prepared pesto in ice cube trays. Once frozen, remove pesto cubes from ice tray and store in a resealable plastic storage bag. Add to recipes as needed.