HEAT oven to 375ºF.
MIX first 3 ingredients in microwaveable bowl. Microwave on HIGH 30 sec.; whisk until well blended. Stir in eggs and vegetables.
LINE each of 8 muffin cups sprayed with cooking spray with tortilla to form bowl; fill with egg mixture.
BAKE 25 min. or until centres of egg filling are set. Let stand 3 to 5 min. before serving.