Hot Fudge Upside-Down Cake
["2 c. self-rising flour", "4 Tbsp. cocoa", "2 c. milk", "1 c. nuts", "1 1/2 c. sugar", "4 Tbsp. butter", "2 tsp. vanilla flavoring"]
["Mix dry ingredients.", "Add milk, flavoring, butter and nuts. Pour into a 9 x 13-inch greased sheet pan."]
["flour", "cocoa", "milk", "nuts", "sugar", "butter", "vanilla flavoring"]