Combine butter and milk in slow-cooking pot.
Turn control to high; cover and heat until butter melts.
Stir in frosting mix.
Cook on high for 1 to 2 minutes, stirring occasionally.
Add flavoring and color, if desired.
Turn to low.
Drop from teaspoon onto waxed paper, swirling tips with spoon.
Keep slow-cooking pot control on low while forming patties.
If candy gets too thick, add several drops hot water.
Makes 5 dozen.