1Heat oven to 450ºF. Spray two 6-cup popover pans or twelve 6-ounce custard cups with cooking spray.
2Place all ingredients in blender. Cover and blend on medium speed about 15 seconds, stopping blender to scrape sides if necessary, just until smooth.
3Fill cups about 1/2 full. Bake 20 minutes.
4Reduce oven temperature to 350º. Bake 15 to 20 minutes longer or until deep golden brown. Immediately remove from cups. Serve hot.