2 c. milk
1 c. sugar
3 tbsp. (heaping) flour
2 tbsp. cocoa
dash of salt
1 egg
1 tbsp. butter
1 tsp. vanilla

Place in saucepan the milk, sugar, flour, cocoa and salt. First add only enough milk to make a paste. Add egg and mix well. Cook over medium heat, stirring constantly to keep from scorching. When thick, remove from heat. Add butter and vanilla. Pour into a baked 8-inch pie shell and let cool completely.