Buttermilk Brownie Cake
["1 c. butter", "1/3 c. cocoa", "2 c. flour", "2 c. sugar", "1 tsp. soda", "1/2 tsp. salt", "2 slightly beaten eggs", "1/2 c. buttermilk", "1 1/2 tsp. vanilla"]
["In a saucepan combine butter, cocoa and 1 cup water.", "Bring to a boil and stir constantly.", "Remove from heat.", "In a large bowl sift together flour, sugar, soda and salt.", "Stir in eggs, buttermilk and vanilla.", "Add cocoa mixture; mix until blended. Pour into a greased 15 x 10 x 1-inch pan.", "Bake at 375\u00b0 for 20 minutes.", "Immediately pour frosting over brownies; spread evenly."]
["butter", "cocoa", "flour", "sugar", "soda", "salt", "eggs", "buttermilk", "vanilla"]