Mississippi Mud Cake
["4 eggs", "2 sticks butter", "2 c. sugar", "pinch of salt", "1 1/2 c. flour", "1/3 c. cocoa", "1 1/2 c. nuts (optional)", "1/2 stick butter", "1/3 c. cocoa", "1 tsp. vanilla", "1/3 c. milk", "1 box powdered sugar"]
["Melt butter and cocoa; mix and spread."]
["eggs", "butter", "sugar", "salt", "flour", "cocoa", "nuts", "butter", "cocoa", "vanilla", "milk", "powdered sugar"]