Heat oven to 450°F. Grease popover pan or six (6-ounce) custard cups. Place into oven 5 minutes.
Beat eggs in bowl at medium speed, scraping bowl often, until light and lemon-colored. Add milk; continue beating 1 minute. Add flour and salt; beat until well mixed.
Pour batter into prepared popover pan or custard cups. Bake 15 minutes.
Reduce oven temperature to 350°F. Do not open oven door. Continue baking 20-25 minutes or until golden brown. Insert knife in popovers to allow steam to escape. Serve immediately.
Eggs and milk should be at room temperature to help ensure successful popovers. Use solid shortening to grease pan rather than no-stick cooking spray.