Chocolate Chess Pie
["1 unbaked 9-inch pie shell", "1 1/2 c. sugar", "1/4 c. unsweetened cocoa powder", "1 Tbsp. all-purpose flour", "1/2 c. (stick) butter or margarine, melted", "3 eggs", "1/4 c. milk", "2 tsp. vanilla", "unsweetened whipped cream (for garnish)"]
["Preheat oven to 350\u00b0.", "Mix together sugar, cocoa and flour in large bowl until no lumps remain.", "Stir in melted butter.", "Mix in eggs, one at a time, until smooth.", "Stir in milk and vanilla. Pour mixture into pie shell."]
["shell", "sugar", "cocoa", "flour", "butter", "eggs", "milk", "vanilla", "cream"]