Yeast Doughnut Frostings (Karen Burbidge)

Maple: 1 lb. powdered sugar ( 3 c.)
2 T. butter or margarine
1 t. maple flavoring
4-6 T. milk

Chocolate: 1 lb. powdered sugar
2 T. butter or margarine
3 T. baker's cocoa
t. vanilla
4-6 T. milk