Adapted from The Joy of Cooking
1/2 cup milk
1/2 tbs melted butter
1/2 cup sifted all-purpose flour
1/4 tsp. salt
1 beaten egg
Preheat oven to 450 degrees.
Beat the milk, butter, flour, and salt together until just smooth. Add the beaten egg, beating until just incorporated.
Spray a muffin tin with non-stick spray.
Pour the batter into the baking cups. Place the pan in the oven. After 15 minutes, lower temperature too 350 and bake 20 minutes longer. During the entire baking process do not open the oven, or your popovers will fall.
Especially delicious with strawberry jam or drizzled with honey.