There was this restaurant in the old Dayton's department store called The Boundary Waters Cafe. Then it changed to The Oak Grill when Marshall Fields took over. Now that it's Macy's I'm not sure what the restaurant is called, but the popovers have lasted through all those years and changes. I think that says something about how good they are.
Boundary Waters Cafe POPOVERS
3 lg eggs
1 C milk
3 Tbsp melted butter
1 C flour
3/4 tsp salt
Preheat oven to 400 degrees. Liberally butter or spray popover pans or deep custard cups. (Popover pans are sold all over the place. See picture below. They run about $10-$15.)
Beat eggs with an electric mixer until frothy. Add butter and milk and mix well.
Add flour and salt and mix to just combine--batter will be a little lumpy.
Divide among prepared pan filling only half full. Bake until puffy and well browned.
DO NOT OPEN THE OVEN WHEN BAKING! It takes about 35-40 min. And really, use your oven light to peek. I can testify to that one too. Many failures makes for a jubilant success when it comes!
Here's a what a popover pan looks like: