Savory Jalapeño-Cheddar Popovers feature a little kick of heat that we know you'll love. For a head start, make the popover batter a day ahead; cover and chill. Then bring to room temp before baking.
Preheat oven to 450°. Process first 5 ingredients in a blender 15 seconds or until smooth. Stir in cheese and jalapeño, and let stand 30 minutes. Lightly grease a 12-cup muffin pan with cooking spray; place in a jelly-roll pan, and heat in oven 2 minutes. Spoon batter into prepared muffin pan, filling halfway. Bake 15 minutes. Reduce oven temperature to 375°, and bake 8 to 12 minutes or until puffed and golden brown.