1 cup milk
3 tablespoons melted butter
1 cup flour
1/2 teaspoon salt
1/4 cup grated parmesan cheese
Preheat oven to 375F.
Butter well 9 − 3″ muffin−pan cups.
With mixer at low speed (or with hand beater) beat eggs slightly; beat in milk and melted butter; then gradually beat in flour and salt.
Place a spoonful of parmesan in each muffin cup, dividing evenly among all.
Pour batter in cups, dividing evenly among all.
Bake popovers 40 minutes; then remove from oven.
Quickly cut slit in side of each to let out steam; return to oven for 10 minutes or until tops are very firm, crisp, and brown. Immediately remove from pan and serve.