Hi Ruth - here is a basic recipe for hard sauce:

Hard Sauce

1/2 cup Butter - softened
2 cups Confectioners'sugar - sifted
1/4 cup Brandy

Cream sugar and butter in a bowl. Add brandy a little at a time while beating. Beat until you have a creamy consistency. Chill before serving. (If you don't want to use alcohol, replace with a couple of teaspoons of vanilla and a little cream or milk)