Lightly spray 1 (8-oz.) ramekin with cooking spray; set aside.
2
Whisk together egg and warm water in a small bowl until well combined. Pour mixture into prepared ramekin and place in bottom of medium saucepan.
3
Pour enough water in saucepan to reach halfway up the side of ramekin. Bring water to gentle simmer. Cover saucepan; cook over medium heat 12 to 14 minutes or until egg is set. Remove from heat. Carefully remove ramekin from saucepan; serve immediately with salt and pepper.