I've tried to make popovers myself, but they didn't turn out as big and billowy as the cafes. The founder of Popover Cafe, Carol Baer, gave me two tips. 1.) Preheat the cups/pan. 2.) Let the batter get to room temperature. Also, I might have discovered why mine weren't as big: I accidentally bought the mini popover pan. Don't make the same mistake! Buy the grand size one for shock value. Below is the simplest recipe I've found that comes close to the restaurants. If you don't live near Popover Cafe, follow the recipe below to make an impressive breakfast on Christmas morning. Or just forget this whole idea and order candy canes.
2 1/2 cups milk
2 cups Flour
1 tsp salt
4 ounces unsalted butter, melted, cooled slightly
1. Place popover pan in oven, set to 450 degrees.
2. Measure the eggs, milk, flour, salt, and half the butter (1/4 cup) into the jar of a blender.
3. Mix batter until combined, around 25 seconds. *Let batter get to room temperature.*
4. Remove pan from oven, grease with remaining butter and fill each cup with batter. Anywhere from 1/2 to 3/4 full depending how wild your popovers to get!
5. Place back oven, bake for 15 minutes.
6. Rotate tins, lower temp to 350 degrees, bake 10 more minutes.
7. Serve immediately or store.