1/2 c. butter
1/3 c. light Karo syrup
1/4 tsp. salt
1/2 tsp. vanilla
1/2 c. powdered cocoa
3-4 tbsp. milk
1 lb. confectioners' sugar

Cream butter. Add Karo, salt and vanilla. Stir in cocoa slowly. Add milk and sugar alternating a little at a time, beating until smooth. Add additional milk, if needed.