Opal'S Chocolate Chess Pie
["1 stick butter", "1 1/2 c. sugar", "1 Tbsp. flour", "2 Tbsp. cocoa", "3 eggs", "1 tsp. vanilla", "1/4 c. milk"]
["Melt butter. In separate pan, mix sugar, flour and cocoa. Pour into butter. Stir well. Add eggs one at a time. Stir well after each one. Add milk and vanilla. Pour into deep-dish unbaked pie crust. Bake at 350\u00b0 for 40 minutes."]
["butter", "sugar", "flour", "cocoa", "eggs", "vanilla", "milk"]