Butterscotch Pie
["3 Tbsp. sifted flour", "3/4 c. packed brown sugar", "1/4 tsp. salt (if using all-purpose flour)", "3 egg yolks, slightly beaten", "4 Tbsp. butter", "1/2 tsp. vanilla extract", "2 c. milk, scalded", "1 baked (8-inch) pie shell"]
["Combine first 6 ingredients in saucepan.", "Stir in milk gradually.", "Cook until thick, stirring constantly.", "Pour into pie shell.", "Cook until serving time."]
["flour", "brown sugar", "salt", "egg yolks", "butter", "vanilla extract", "milk", "pie shell"]