Step 1

Whisk together first 5 ingredients.

Step 2

Place a 10-in. skillet coated with cooking spray over medium heat. Pour in egg mixture. Mixture should set immediately at edges. As eggs set, push cooked portions toward the center, letting uncooked eggs flow underneath. When eggs are thickened and no liquid egg remains, top 1 half with remaining ingredients. Fold omelet in half. Cut in half to serve.