Puffy Baked German Pancakes
["1 c. all-purpose flour, sifted", "1 Tbsp. sugar", "1/4 tsp. salt", "4 eggs or 2 eggs plus egg substitute to make up difference)", "1 c. milk", "4 Tbsp. butter, cut in bits", "powdered sugar (for garnish)"]
["Preheat oven to 425\u00b0.", "Heat two 9-inch cast-iron skillets or heavy cake pans. (You need sturdy pans that can hold and conduct heat.)"]
["flour", "sugar", "salt", "eggs", "milk", "butter", "powdered sugar"]